The following illustration shows the locations of parts on the system board.

1 Microprocessor

11 SATA 2 IDE connector

2 DIMM connector 1

12 Promise of value (POV) daughter card

 

(some models)

3 DIMM connector 2

13 Clear CMOS/Recovery jumper

4 DIMM connector 3

14 Battery

5 DIMM connector 4

15 SCSI LED connector

6 Power connector

16 PCI slots

7 Diskette drive connector

17 Front panel audio connector

8 PATA primary IDE connector

18 CD-ROM audio connector

9 PATA secondary IDE connector

19 AGP slot

10SATA 1 IDE 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:

vSystem 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.

vIf 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.

vUse 2.5 V, 184-pin, 333 MHz double data rate synchronous dynamic random access memory (DDR SDRAM).

vUse 128 MB, 256 MB, 512 MB, or 1.0 GB (when available) DIMMs in any combination.

vDIMMs are 25.4 mm (1.0 inch) in height.

Note: Only DDR SDRAM DIMMs can be used.

58User Guide

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IBM 8187, 8128, 8185, 8189, 8186, 8188, 8190 manual Installing memory