Apple iBook G4 - Disabling Onboard Ram Tutorial

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Manually disabling soldered

onboard RAM in 14” iBook G4

Relevant specs of this computer:

• Model: M9848LL/A

• 1.42 GHz PowerPC processor

• 512 MB PC2700 (333MHz) DDR onboard

• 1 RAM expansion slot

• OS 10.4 Tiger

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The Preliminary Problem

My iBook began acWng ﬁnicky on nearly a daily basis. At ﬁrst, it only gave me the infamous beach-‐ball

cursor. Then soon aZer that, applicaWons (mainly Safari) started crashing, and the crashes became more common. The glitch that made me seriously worry about my iBook’s integrity was when it froze during a rouWne boot. Upon several reboots, it did the same thing—it would halt on a blank screen and refuse to show any signs of progress. Rese^ng the parameter RAM (Command+OpWon+P+R aZer boot noise) ﬁxed the halted boot problem, but I decided to wipe the computer’s drive and do a reinstall to give the iBook a fresh start. I didn’t feel like troubleshooWng an

intermiaent problem, and I ﬁgured that since the computer had been in service for about 5 years or so, maybe I was facing a Macintosh OS problem

synonymous to “Windows rot.” All data was backed up, so a reinstall seemed logical.

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What Happened

I used the original reinstall discs to aaempt a reinstallaWon, but during the installaWon, a message appeared on the screen saying there were errors during the installaWon and to please try again. I tried numerous Wmes to reinstall, using several diﬀerent forma^ng opWons thinking one of them was the key, yet I got the same error message every Wme. InteresWngly, I used Apple’s Hardware Test to check for hardware errors, and it NEVER detected anything. But it was obviously hardware because there was no soZware on my iBook. Next, I tried to narrow down the hardware that may have been faulty. One by one, I replaced the hard drive temporarily, tried using an external DVD drive, burned a new installaWon DVD to try, and inserted an appropriate module of RAM. There were no signs of change—sWll the same error. However, there was ONE TIME the installaWon didn’t

return an error (I assume because I was installing the bare minimum in hopes that installing less content was easier for the computer than installing everything). As soon as I rebooted, though, the computer didn’t even get to the gray spinning wheel screen before it kernel panicked. Undoubtedly, the installaWon had errors that had gone unnoWced by the

computer because when I checked the hard disk in Disk UWlity, it showed numerous

permission errors. A clean install wouldn’t have had permission errors. AZer several more reinstall aaempts, I began to check the installaWon log ﬁles several Wmes immediately

following the appearances of the infamous error message, and the errors were consistent —there were always several accounts of crashed threads and buﬀer overﬂows. These are almost solely RAM issues. Now I had an idea of what the problem most likely was.

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Further Research

Most (if not all) iBooks have at least one bank of onboard SDRAM. This memory, as far as I know from extensive research, cannot be disabled through soZware. To put this in

perspecWve, if your iBook’s onboard memory becomes corrupted or otherwise faulty, there really is no way to fix the problem without ripping your computer open and doing some minor hardware modificaWons. If you add extra RAM as I did, your computer will sWll use its onboard banks first by default. But if the onboard RAM could be disabled, the computer would only recognize the RAM in the expansion slot. I was trying to find a way to disable this onboard RAM when I came across a VERY HELPFUL forum post (please read Varu’s post at hap://forums.macosxhints.com/showthread.php?t=41228). In this post, Varu describes how to disable the soldered onboard RAM for an iBook 800, which is NOT the same model I have. I was hesitant to do anything to my computer because someone with my model

iBook leZ a post saying he tried a similar process to Varu’s, though more crude, and it rendered his iBook dead. But unless I wanted a really elaborate doorstop, I was out of opWons, so I decided to follow Varu’s plan, but not blindly. I found a Micron pin-‐out datasheet for MY model’s onboard RAM, and it turned out the relevant power pins to

disable were the same in both my model and the iBook 800 (I didn’t check the other pins). Now all I needed to do was disable the appropriate pins—easy right?

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Soldering Time!

I began by taking the iBook apart very carefully (working in a carpeted room during the winter is dangerous by the way—ground yourself). Once inside, I used a soldering iron to heat the three criWcal pins (1, 18, and 33). Remember those numbers as if your iBook’s life depends on them, because it does. AZer applying heat for several seconds, I used an x-‐acto knife with a new blade to pry each criWcal pin up from its pad (I did this on the RAM chip on the boaom of the logic board nearest the fan). Now that the power was disabled to this one chip, the iBook should have registered the whole RAM bank as blank. According to Varu’s post, the computer’s only signs of life should be three beeps and its sleep indicator glowing. You can imagine my surprise when I turned on the computer and there was no change—the “no startup disk” icon ﬂashed just as it had been doing. It

wasn’t dead. It occurred to me that since this was a diﬀerent model than Varu’s, it may have more than one bank of memory (His iBook had 128 MB onboard—mine had 512 MB). Sure enough, the Apple Hardware Test conﬁrmed that the computer was sWll recognizing 256 MB of memory. I sWll had one bank to disable. The four RAM chips on the top of the logic board compose one bank, and the four chips on the underside

compose a separate bank. AZer I disabled BOTH banks and inserted a RAM module into the expansion slot, all was good. The next installaWon aaempt was successful, the iBook booted, and it is now running as smoothly as ever—no more problems.

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AZerthoughts

One thing that would have been VERY helpful through all this is a detailed tutorial with pictures showing exactly WHAT TO DO once you get inside the iBook, but where is the fun in that? Since my experience yielded a fully funcWonal computer, though, I have made the following tutorial to share my knowledge with anybody who is in the same posiWon I once was. Unfortunately, you’ll probably ﬁnd that removing an iBook’s polycarbonate shell is a torturous experience you’ll only want to endure once, and I forgot to take pictures while I had it open. Nonetheless, I do have some pictures to which you can refer. I hope this helps.

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Tutorial: Let’s Get Started

Before you begin, you’ll need the following items:

Small phillips screwdriver Small ﬂathead screwdriver Soldering iron with very ﬁne Wp

Fine sharp object to pry up pins (x-‐acto knife for me) Magnifying glass (opWonal, but recommended)

1 sWck of 333 MHz PC2700 DDR SDRAM 184-‐pin laptop memory iBook with a problem like mine

If you’re not comfortable with delving into your computer unguided, there are many useful online tutorials on how to take apart iBooks, so I will skip the speciﬁc

dissassembly details. You will encounter quite a few screws though, so be sure to keep them organized. I used an ice cube tray.

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Disabling the First Bank

We will first disable the top bank of RAM. This does not require much disassembly. Simply remove the keyboard (see figures 1 & 2). Then remove the RAM slot cover (see figure 3). You should remove the keyboard connector so you don’t

accidentally touch it with the soldering iron.

Figure 2: Keyboard removed

Figure 1: Red circled tabs release keyboard

Figure 3: RAM slot cover removed/top bank of onboard RAM exposed

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Disabling the First Bank (conWnued…)

Figure 5: Enlargement of which pins to pry up Figure 4: Enlarged area in Fig. 5

Now, you will need to pry up pins 1, 18, and 33 on one of the chips (see ﬁgure 5). I suggest the top chip because that is the chip I used. The circular bullet indicated by the blue arrow marks pin 1, and they

conWnue sequenWally. Let your soldering iron heat up, but if you Wn your Wp, make sure you remove as much solder as you can. This is an UNsoldering job. Hold the Wp to pin 1 for 5-‐10 seconds, being careful not to touch anything else, then remove the soldering iron and immediately pry the pin up with a liale twisWng moWon of your x-‐acto knife. It should come up fairly

easily. Repeat this process for pins 18 and 33, and verify with a magnifying glass that the pins are indeed disconnected from their pads.

Note: Double check your counWng and mark pin 18 with a marker or something before you do anything. You don’t want to pry up the wrong pin.

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Disabling the Second Bank

The second RAM bank is on the underside of the logic board,

directly underneath the ﬁrst bank you just disabled. To expose it, you’ll need to:

Then, you should be able to see four RAM chips idenWcal to the ones you saw under the keyboard. Though I don’t know if it

maaers, I pried up the appropriate pins on the chip closest to the fan, as did Varu, so I strongly suggest doing the same. I don’t have any images for this, but it should look something like the diagram on the right. Repeat what you did before—pry up pins 1, 18, and 33. There may be a wire in the way of your soldering

iron. Simply disconnect it temporarily and tape it out of the way. Verify your work with a magnifying glass.

• Remove the baaery

• Remove the three rubber feet

• Unscrew all screws holding the boaom polycarbonate shell in place • Remove the boaom shell (very carefully—this is the hard part)

• Unscrew screws holding aluminum shielding in place • Remove aluminum shielding

Fan RAM chip RAM chip RAM chip RAM chip

This is the chip you will unpin. The bullet marking pin 1 should be in the lower leZ corner.

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Final Steps

Before you reassemble your iBook, be sure your hardware mod worked. Put the aluminum

shielding back in place without any screws and place the iBook on a nonconducWve surface. Put the baaery back in, make sure it has a solid

connecWon, and try booWng. Be sure the computer doesn’t move when you press the power buaon—you don’t want to jar the baaery out of place. The only signs of life in your

computer should be three beeps (meaning it cannot detect any RAM modules) and a glowing sleep indicator. Hold the power buaon to shut it down, then insert a good sWck of RAM into the expansion slot and try booWng again. This Wme, it *should* give you a screen with the “no startup disk” icon. Insert your reinstallaWon DVD and

reinstall your OS. No more error messages should appear. AZer you see your OS is running, you should reboot and give your computer a good ole’ PRAM reset.

Note: I have only found two minor side-‐effects of doing this hardware mod. Neither are really notable. First, the Apple Hardware Test now detects an “error” with my RAM configuraWon. Go figure. The other is that my iBook no longer makes its infamous startup “bong” sound. In order to reset the PRAM now, I listen to the various clicks and noises the computer makes at startup

instead of relying on the startup noise. Everything else seems the same.

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A Few Other Notes

I’ve heard that iBooks are finicky about their RAM. They don’t generally like high density RAM. I used a 1 GB sWck of PNY memory from Best Buy and it works just fine, but before that, I bought a 1 GB PNY module from NewEgg that I felt certain was idenWcal. The Apple Hardware Test was fine with the Best Buy RAM, but it didn’t like the NewEgg module. It returned a memory error consistently when the NewEgg RAM module was installed. I don’t know whether that would have affected how my computer would have run, but I wasn’t taking any chances. The NewEgg module seemed to get much warmer than the Best Buy module during the hardware test too. Whatever the case is, I think buying any RAM not cerWfied by Apple is a crapshoot. I may have just goaen lucky. Keep this in mind.

The main conclusion I have reached aZer all this is that onboard memory that cannot be disabled by soZware is generally a bad idea.

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Resources

hap://forums.macosxhints.com/showthread.php?t=41228

Varu’s post was extremely helpful.

Micron RAM chip datasheet for Micron Technologies 46V32M16 chips

I have included the relevant pages of this datasheet (see pg. 15-‐18)

Apple iBook list of technical speciﬁcaWons for this 14” iBook G4

I have included this as well (see pg. 19-‐21)

My own experience

Please, if you have a similar iBook problem and would like to contact me to ask any quesWons, feel free. Email: [email protected]

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1

512Mb: x4, x8, x16 DDR SDRAM Micron Technology, Inc., reserves the right to change products or specifications without notice.

512Mb: x4, x8, x16 DDR SDRAM

ADVANCE‡

‡ PRODUCTS AND SPECIFICATIONS DISCUSSED HEREIN ARE FOR EVALUATION AND REFERENCE PURPOSES ONLY AND ARE SUBJECT TO CHANGE BY MICRON WITHOUT NOTICE. PRODUCTS ARE ONLY WARRANTED BY MICRON TO MEET MICRON’S

PRODUCTION DATA SHEET SPECIFICATIONS.

DOUBLE DATA RATE

(DDR) SDRAM

MT46V128M4 –32 Meg x 4 x 4 banks MT46V64M8 – 16 Meg x 8 x 4 banks MT46V32M16 – 8 Meg x 16 x 4 banks

For the latest data sheet revisions, please refer to the Micron Web site: www.micron.com/datasheets

PIN ASSIGNMENT (TOP VIEW) 66-Pin TSOP

FEATURES

• VDD = +2.5V ±0.2V, VDDQ = +2.5V ±0.2V

• Bidirectional data strobe (DQS) transmitted/ received with data, i.e., source-synchronous data capture (x16 has two – one per byte)

• Internal, pipelined double-data-rate (DDR) architecture; two data accesses per clock cycle • Differential clock inputs (CK and CK#)

• Commands entered on each positive CK edge • DQS edge-aligned with data for READs;

center-aligned with data for WRITEs

• DLL to align DQ and DQS transitions with CK • Four internal banks for concurrent operation • Data mask (DM) for masking write data (x16 has

two – one per byte)

• Programmable burst lengths: 2, 4, or 8 • x16 has programmable IOL/IOV.

• Concurrent auto precharge option is supported • Auto Refresh and Self Refresh Modes

• Longer lead TSOP for improved reliability (OCPL) • 2.5V I/O (SSTL_2 compatible)

OPTIONS MARKING

• Configuration

128 Meg x 4 (32 Meg x 4 x 4 banks) 128M4

• Plastic Package – OCPL

66-pin TSOP (standard 22.3mm length) TG (400 mil width, 0.65mm pin pitch)

• Timing – Cycle Time

7.5ns @ CL = 2 (DDR266B)1 _-75Z 7.5ns @ CL = 2.5 (DDR266B)2 _-75 10ns @ CL = 2 (DDR200)2 _-8 • Self Refresh Standard none Low Power L

NOTE: 1. Supports PC2100 modules with 2-3-3 timing 2. Supports PC2100 modules with 2.5-3-3 timing 3. Supports PC1600 modules with 2-2-2 timing

128 Meg x 4 64 Meg x 8 32 Meg x 16 Configuration 32 Meg x 4 x 4 banks 16 Meg x 8 x 4 banks 8 Meg x 16 x 4 banks

Refresh Count 8K 8K 8K

Row Addressing 8K (A0–A12) 8K (A0–A12) 8K (A0–A12) Bank Addressing 4 (BA0, BA1) 4 (BA0, BA1) 4 (BA0, BA1) Column Addressing 4K (A0–A9, A11, A12) 2K (A0–A9, A11) 1K (A0–A9)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 VSS DQ15 VSSQ DQ14 DQ13 VDDQ DQ12 DQ11 VSSQ DQ10 DQ9 VDDQ DQ8 NC VSSQ UDQS DNU VREF VSS UDM CK# CK CKE NC A12 A11 A9 A8 A7 A6 A5 A4 VSS x16 VDD DQ0 VDDQ DQ1 DQ2 VssQ DQ3 DQ4 VDDQ DQ5 DQ6 VssQ DQ7 NC VDDQ LDQS NC VDD DNU LDM WE# CAS# RAS# CS# NC BA0 BA1 A10/AP A0 A1 A2 A3 VDD x16 VSS DQ7 VSSQ NC DQ6 VDDQ NC DQ5 VSSQ NC DQ4 VDDQ NC NC VSSQ DQS DNU VREF VSS DM CK# CK CKE NC A12 A11 A9 A8 A7 A6 A5 A4 VSS x8 x4 VSS NC VSSQ NC DQ3 VDDQ NC NC VSSQ NC DQ2 VDDQ NC NC VSSQ DQS DNU VREF VSS DM CK# CK CKE NC A12 A11 A9 A8 A7 A6 A5 A4 VSS VDD DQ0 VDDQ NC DQ1 VSSQ NC DQ2 VDDQ NC DQ3 VSSQ NC NC VDDQ NC NC VDD DNU NC WE# CAS# RAS# CS# NC BA0 BA1 A10/AP A0 A1 A2 A3 VDD x8 x4 VDD NC VDDQ NC DQ0 VSSQ NC NC VDDQ NC DQ1 VSSQ NC NC VDDQ NC NC VDD DNU NC WE# CAS# RAS# CS# NC BA0 BA1 A10/AP A0 A1 A2 A3 VDD

KEY TIMING PARAMETERS

SPEED CLOCK RATE DATA-OUT ACCESS DQS-DQ GRADE CL = 2** CL = 2.5** WINDOW* WINDOW SKEW

-75 133 MHz 133 MHz 2.5ns ±0.75ns +0.5ns -75 100 MHz 133 MHz 2.5ns ±0.75ns +0.5ns -8 100 MHz 125 MHz 3.4ns ±0.8ns +0.6ns *Minimum clock rate @ CL = 2 (-8) and CL = 2.5 (-75) **CL = CAS (Read) Latency

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7

ADVANCE

PIN DESCRIPTIONS

TSOP PIN NUMBERS SYMBOL TYPE DESCRIPTION

45, 46 CK, CK# Input Clock: CK and CK# are differential clock inputs. All address and

control input signals are sampled on the crossing of the positive edge of CK and negative edge of CK#. Output data (DQs and DQS) is referenced to the crossings of CK and CK#.

44 CKE Input Clock Enable: CKE HIGH activates and CKE LOW deactivates the

internal clock, input buffers and output drivers. Taking CKE LOW provides PRECHARGE POWER-DOWN and SELF REFRESH

operations (all banks idle), or ACTIVE POWER-DOWN (row ACTIVE in any bank). CKE is synchronous for POWER-DOWN entry and exit, and for SELF REFRESH entry. CKE is asynchronous for SELF REFRESH exit and for disabling the outputs. CKE must be maintained HIGH throughout read and write accesses. Input buffers (excluding CK, CK# and CKE) are disabled during POWER-DOWN. Input buffers (excluding CKE) are disabled during SELF REFRESH. CKE is an SSTL_2 input but will detect an LVCMOS LOW level after VDD is applied.

24 CS# Input Chip Select: CS# enables (registered LOW) and disables

(regis-tered HIGH) the command decoder. All commands are masked when CS# is registered HIGH. CS# provides for external bank selection on systems with multiple banks. CS# is considered part of the command code.

23, 22, 21 RAS#, CAS#, Input Command Inputs: RAS#, CAS#, and WE# (along with CS#) define the

WE# command being entered.

47 DM Input Input Data Mask: DM is an input mask signal for write data. Input

20, 47 LDM, UDM data is masked when DM is sampled HIGH along with that input data

during a WRITE access. DM is sampled on both edges of DQS. Although DM pins are input-only, the DM loading is designed to match that of DQ and DQS pins. For the x16 , LDM is DM for DQ0-DQ7 and UDM is DM for DQ8-DQ15. Pin 20 is a NC on x4 and x8

26, 27 BA0, BA1 Input Bank Address Inputs: BA0 and BA1 define to which bank an ACTIVE, READ, WRITE, or PRECHARGE command is being applied.

29-32, 35-40, A0–A12 Input Address Inputs: Provide the row address for ACTIVE commands, and

28, 41, 42 the column address and auto precharge bit (A10) for READ/WRITE commands, to select one location out of the memory array in the respective bank. A10 sampled during a PRECHARGE command determines whether the PRECHARGE applies to one bank (A10 LOW, bank selected by BA0, BA1) or all banks (A10 HIGH). The address inputs also provide the op-code during a MODE REGISTER SET command. BA0 and BA1 define which mode register (mode register or extended mode register) is loaded during the LOAD MODE REGISTER command.

2, 4, 5, 7, 8, 10, 11, 13, DQ0–15 I/O Data Input/Output: Data bus for x16 (4, 7, 10, 13, 54, 57, 60, and 63

54, 56, 57, 59, 60, 62, are NC for x8), (2, 4, 7, 8,10, 13, 54, 57, 59, 60, 63, and 65 for x4).

63, 65

(continued on next page)

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8

ADVANCE

PIN DESCRIPTIONS (continued)

RESERVED NC PINS1

17 A13 I Address input for 1Gb devices.

NOTE: 1. NC pins not listed may also be reserved for other uses now or in the future. This table simply defines specific NC pins deemed to be of importance.

2, 5, 8, 11, 56, 59, 62, 65 DQ0-7 I/O Data Input/Output: Data bus for x8 (2, 8, 59 and 65 are NC for x4).

5, 11, 56, 62 DQ0-3 I/O Data Input/Output: Data bus for x4.

51 DQS I/O Data Strobe: Output with read data, input with write data. DQS is

16, 51 LDQS, UDQS edge-aligned with read data, centered in write data. It is used to capture data. For the x16 , LDQS is DQS for DQ0-DQ7 and UDQS is DQS for DQ8-DQ15. Pin 16 is NC on x4 and x8.

50 DNU – Do Not Use: Must float to minimize noise.

3, 9, 15, 55, 61 VDDQ Supply DQ Power Supply: +2.5V ±0.2V. Isolated on the die for improved

noise immunity.

6, 12, 52, 58, 64 VSSQ Supply DQ Ground. Isolated on the die for improved noise immunity.

1, 18, 33 VDD Supply Power Supply: +2.5V ±0.2V.

34, 48, 66 VSS Supply Ground.

49 VREF Supply SSTL_2 reference voltage.

14, 17, 19, 25, 43, 53 NC – No Connect: These pins should be left unconnected.

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68

ADVANCE

(TG) OPTION

66-PIN PLASTIC TSOP (400 MIL)

NOTE: 1. All dimensions in millimeters MAX or typical here noted.

MIN

2. Package width and length do not include mold protrusion; allowable mold protrusion is 0.25mm per side. SEE DETAIL A 0.10 0.65 TYP 0.71 10.16 ±0.08 0.15 0.50 ±0.10 PIN #1 ID DETAIL A 22.22 ± 0.08 0.32 ± .075 TYP +0.03 -0.02 +0.10 -0.05 1.20 MAX 0.10 0.25 11.76 ±0.10 0.80 TYP 0.10 (2X) GAGE PLANE

8000 S. Federal Way, P.O. Box 6, Boise, ID 83707-0006, Tel: 208-368-3900

E-mail: [email protected], Internet: http://www.micron.com, Customer Comment Line: 800-932-4992 Micron is a registered trademark and the Micron logo and M logo are trademarks of Micron Technology, Inc.

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11/30/09 12:11 AM iBook G4 (Mid 2005) - Technical Specifications

Page 1 of 3 http://support.apple.com/kb/SP43

Last Modified: October 13, 2008 Article: SP43

iBook G4 (Mid 2005) - Technical Specifications

iBook G4 (Mid 2005) - Technical Specifications

Configurations 12-inch Combo Drive 14-inch SuperDrive

Model M9846LL/A M9848LL/A

Processor 1.33GHz PowerPC G4 1.42GHz PowerPC G4 Level 2 Cache 512K at 1.33GHz 512K at 1.42GHz

System bus 133MHz 142MHz

Memory (DDR SDRAM) 512MB PC2700 (333MHz) DDR SDRAM; supports up to 1.5GB; 1 available expansion slot Hard drive 40GB ATA/100 4200 rpm 60GB ATA/100 4200 rpm

Optical drive Slot-Load Combo Drive DVD-ROM/CD-RW Slot-Load SuperDrive DVD±RW/CD-RW Display 12.1-inch (diagonal) TFT XGA 14.1-inch (diagonal) TFT XGA Graphics support ATI Mobility Radeon 9550 with 32MB of dedicated DDR SDRAM

FireWire One FireWire 400 port at up to 400 Mbps USB Two USB 2.0 ports at up to 480 Mbps each

VGA, S-video and composite video output Video mirroring supports VGA video out to an external display or projector (requires included Apple VGA Video Adapter) and S-video and composite video out to a TV or VCR (requires optional Apple Video Adapter, sold separately).

Modem Built-in 56K V.92 modem Ethernet Built-in 10/100BASE-T Ethernet

Wireless Built-in 54-Mbps AirPort Extreme (Wi-Fi 802.11g); built-in Bluetooth 2.0+EDR System software Mac OS X version 10.4 Tiger

Software iLife ’06 (includes iTunes, iPhoto, iMovie HD, iDVD , GarageBand, iWeb), Mail, Dashboard, Spotlight, iChat AV, Safari, Sherlock, QuickTime, iSync, iCal, DVD Player, Address Book, AppleWorks, iWork (30-day trial), Classic environment, Quicken 2005 for Macintosh, 2005 World Book Multimedia Reference Suite, Nanosaur 2, Marble Blast Gold, Microsoft Office 2004 for Mac Test Drive, Zinio Reader, XCode Developer Tools and Apple Hardware Test

Service and support 90 days of free telephone support and one-year limited warranty. Product contains documentation. Backup copy of software is provided on CD-ROM.

Hardware accessories Apple VGA Display Adapter, modem cable, power adapter, AC wall plug, power cord, lithium-ion battery

Build-to-Order Options Order a custom-configured iBook from the online Apple Store or an authorized Apple reseller.

Memory 256MB (768MB total), 512MB (1GB total), 1GB (1.5GB total) Hard Drive 60GB, 80GB or 100GB ATA-100 4200RPM

Wireless AirPort Extreme Base Station (with modem and antenna port) M8799LL/A AirPort Express Base Station M9470LL/A

Adapters and cables Apple Video Adapter M9109G/A Apple VGA Display Adapter M8639G/A

Apple FireWire Cable (4-pin to 6-pin, 1.8 meter) M8706G/A Battery and power Apple Portable Power Adapter M8943LL/A

iBook Rechargeable Battery (12.1-inch iBook with Combo drive) M9337G/A iBook Rechargeable Battery (14.1-inch iBook) M9338G/A

Accessories Apple Wireless Keyboard M9270LL/A Apple Wireless Mouse M9269Z/A Apple Keyboard (White) M9034LL/A

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Technical Specifications

Processor and memory

1.33GHz or 1.42GHz PowerPC G4 processor with Velocity Engine and 512K on-chip level 2 cache 133MHz or 142MHz system bus

512MB of PC2700 (333MHz) DDR SDRAM with support for up to 1.5GB

Storage

40GB or 60GB Ultra ATA hard disk drive One of the following optical drives:

Combo Drive (DVD-ROM/CD-RW); writes CD-R discs at up to 24x speed, writes CD-RW discs at up to 16x speed, reads DVD-ROM discs at up to 8x speed, reads CD-ROM discs at up to 24x speed

8x SuperDrive (DVD±RW/CD-RW); writes DVD±R discs at up to 8x speed, writes DVD±RW discs at up to 4x speed, reads DVDs at up to 8x speed, writes CD-R discs at up to 24x speed, writes CD-RW discs at up to 16x speed, reads CDs at up to 24x speed.

Support for external FireWire and USB storage devices

Display

Choice of built-in 12.1-inch or 14.1-inch (diagonal) TFT XGA active-matrix display Support for millions of colors at 1024 x 768 pixel resolution

Support for resolution scaling to 800 x 600 pixel and 640 x 480 pixel resolution with millions of colors

Graphics support

ATI Mobility Radeon 9550 graphics processor with 32MB of dedicated video memory and AGP 4X support

Communications

Built-in 56K V.92 modem (RJ-11 connector) Built-in 10/100BASE-T Ethernet (RJ-45 connector)

Built-in 54 Mbps AirPort Extreme (compliant with 802.11g standard; Wi-Fi Certified for 802.11g and 802.11b interoperability)

Built-in Bluetooth 2.0+EDR

Peripheral connections

Two 480 Mbps USB 2.0 ports

One FireWire 400 port at up to 400 Mbps

Audio

16-bit CD-quality stereo headphone jack Built-in stereo speakers

Built-in omnidirectional microphone

Support for external USB audio devices such as microphones and speakers

Video

VGA video output for video mirroring on an external display or projector (24-bit color) with included Apple VGA Display Adapter.

S-video and composite video output to TV or projector (requires Apple Video Adapter, sold separately)

Battery

iBook G4 with 12.1-inch display: 50-watt-hour lithium-ion battery provides up to 6 hours of battery life on a single charge

iBook G4 with 14.1-inch display: 61-watt-hour lithium-ion battery provides up to 6 hours of battery life on a single charge

Integrated charge indicator LEDs on battery

Keyboard and trackpad

Apple Mouse (White) M9035G/A iSight M8817LL/C

Services AppleCare Protection Plan M8852LL/A .Mac Subscription M9888Z/A

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Built-in full-size keyboard with 77 (U.S.) or 78 (ISO) keys, including 12 function keys, 4 arrow keys (inverted "T" arrangement) and embedded numeric keypad

Solid-state trackpad provides precise cursor control; supports tap, double-tap, drag and scrolling capabilities

Electrical and environmental

Meets ENERGY STAR requirements Line voltage: 100V to 240V AC Frequency: 50 to 60 Hz

Operating temperature: 50° to 95° F (10° to 35° C) Storage temperature: -13° to 113° F (-25° to 45° C) Relative humidity: 20% to 80% noncondensing Maximum operating altitude: 10,000 feet Maximum storage altitude: 15,000 feet

Size and weight (12.1-inch model)

Height: 1.35 inches (3.42 cm) Width: 11.2 inches (28.5 cm) Depth: 9.06 inches (23.0 cm) Weight: 4.9 pounds (2.2 kg)

Size and weight: (14.1-inch model)

Height: 1.35 inches (3.42 cm) Width: 12.7 inches (32.3 cm) Depth: 10.2 inches (25.9 cm) Weight: 5.9 pounds (2.7 kg)

1. Weight varies by configuration and manufacturing process.

2. 1GB = 1 billion bytes; actual formatted capacity less.

3. Compatible ISP and telephone services required. Your ISP may not support all V.92 features. Modem will function according to V.90

standards if V.92 services are not available. Actual modem speeds lower; speed depends on connection rate and other factors.

4. Wireless Internet access requires AirPort Base Station or AirPort Extreme Base Station and Internet access (fees may apply). Some ISPs

are not currently compatible with AirPort. Range may vary with site conditions.

5. You need an Apple SuperDrive to burn DVDs in iDVD, but you can save iDVD projects as an archive on iBook G4 models with a Combo

Drive and later transfer them to a SuperDrive-equipped system and burn them to a DVD.

6. Actual rates will vary.

7. Battery life depends on configuration and use.

Internet access requires a compatible Internet service provider; fees may apply. Product contains electronic documentation. Backup copy of software is included.

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