ThinkPad X20, X21, X22, X23, X24 Hardware Maintenance Manual (March 2002)
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ThinkPad X20, X21, X22, X23, X24 43 Memory (standard) Memory (optional) CMOS RAM Display Hard disk drive I/O port Internal modem X20, X21 v 64 MB (on the system board) v 128 MB (on the system board) X22, X23, X24 v 128 MB (on the system board) v 256 MB (on the system board plus 128 MB DIMM) X20, X21 v 64... 320/384 MB) X22, X23, X24 v 64 MB, 128 MB, 256 MB or 512 MB SDRAM card (maximum of 640 MB) X20, X21 v 114 bytes +4 Kbytes X22, X23, X24 v 256bytes X20, X21 v 12.1-inch, 16M colors SVGA (800×600 resolution) TFT color LCD v 12.1-inch, 16M colors XGA (1024×768 resolution...
ThinkPad X20, X21, X22, X23, X24 43 Memory (standard) Memory (optional) CMOS RAM Display Hard disk drive I/O port Internal modem X20, X21 v 64 MB (on the system board) v 128 MB (on the system board) X22, X23, X24 v 128 MB (on the system board) v 256 MB (on the system board plus 128 MB DIMM) X20, X21 v 64... 320/384 MB) X22, X23, X24 v 64 MB, 128 MB, 256 MB or 512 MB SDRAM card (maximum of 640 MB) X20, X21 v 114 bytes +4 Kbytes X22, X23, X24 v 256bytes X20, X21 v 12.1-inch, 16M colors SVGA (800×600 resolution) TFT color LCD v 12.1-inch, 16M colors XGA (1024×768 resolution...