The RAM expansion slot accommodates a standard SO-DIMM (small outline, dual inline memory module) that uses SDRAM devices.
ImportantA RAM expansion SO-DIMM for the iBook computer must use SDRAM devices. If the user installs an SO-DIMM that uses EDO or SGRAM devices, the computer will beep twice when the user attempts to restart the computer.
An SO-DIMM for the iBook computer can contain either 32, 64, 128, 256, or 512 MB of memory. Maximum total RAM capacity using devices currently available is 640 MB and is limited by the space available for the SO-DIMM.