IBM A50 User Manual

The following illustration shows the locations of parts on the system board.
1 Microprocessor 11 SATA0 connector
2 DIMM connector 1 12 Front panel connector
3 DIMM connector 2 13 Clear CMOS/Recovery jumper
4 DIMM connector 3 14 Battery
5 DIMM connector 4 15 Front panel audio connector
6 Power connector 16 PCI slot 3
7 Diskette drive connector 17 PCI slot 2
8 Primary IDE connector 18 PCI slot 1
9 Secondary IDE connector 19 AGP slot (some models)
10SATA1 connector 20 12v power connector
Installing memory
Your computer has four connectors for installing dual inline memory modules
(DIMMs) that provide up to a maximum of 4.0 GB of system memory.
When installing DIMMs, the following rules apply:
v System memory is divided into two channels (channel A and B). DIMM
connectors 1 and 2 are channel A, and DIMM connectors 3 and 4 are channel B.
v If DIMM connectors 1 and 3 (or 2 and 4) are filled with the same technology and
size of memory, the system operates in dual channel mode.
v Use 2.5 V, 184-pin, double data rate synchronous dynamic random access
memory (DDR SDRAM).
v Use 128 MB, 256 MB, 512 MB or 1.0 GB DIMMs in any combination.
v DIMMs are 38.1 mm (1.5 inches) in height.
Note:
Only DDR SDRAM DIMMs can be used.
62 User Guide

IBM A50 Specifications

General

Brand	IBM
Model	A50
Category	Desktop
Language	English