Editing IBook (section)

== Expandability and upgrades ==
[[File:Apple Airport Extreme 802.11g card.jpg|thumb|AirPort Extreme installed in an iBook G4]]
The iBook keyboard lifts up, allowing installation of the AirPort (wireless) card and additional memory. This gives the keyboard a "spongy" effect, especially in G3 iBooks with the translucent keyboard. The "sponginess" was corrected in the PowerPC G4 models.

Accessing the hard disk drive is complex and time-consuming, involving partial disassembly of the unit and the removal of over 30 different-sized screws.<ref>{{Cite web |date=May 22, 2009 |title=iBook G4 12" 800 MHz-1.2 GHz Hard Drive Replacement |url=https://www.ifixit.com/Guide/iBook+G4+12-Inch+800+MHz-1.2+GHz+Hard+Drive+Replacement/166 |access-date=February 9, 2023 |website=iFixit |language=en}}</ref>

The memory in the iBook G4 is covered by a removable AirPort card, and accessible by removing the RAM shield with a [[List of screw drives#Phillips|Phillips screwdriver]]. While some of the earlier models (e.g., 800&nbsp;MHz and 933&nbsp;MHz) have a specified 640&nbsp;MB RAM limit, it is possible to have a total of 1.12&nbsp;GB of RAM installed (128&nbsp;MB built-in, plus a 1&nbsp;GB SO-DIMM), or 1.25 or 1.5&nbsp;GB in the later models with 256 or 512&nbsp;MB of RAM soldered to the logic board.

Although no longer officially supported by macOS versions beyond those given in the chart above, the system has also been supported via [[MorphOS]] (an Amiga compatible OS) since version 3.2.