IBM THINKCENTER 8128, Hardware Maintenance Manual

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Identifying parts on the system board (all machine types)
1
Microprocessor
11
SATA 1 IDE connector
2
Fan sink connectors
12
SATA 2 IDE connector
3
Memory connector 1
13
Security daughter card connector
4
Memory connector 2
14
Clear CMOS/Recovery jumper
5
Memory connector 3
15
Battery
6
Memory connector 4
16
SCSI LED connector
7
Power connector
17
PCI slots
8
Diskette drive connector
18
Front panel audio connector
9
PATA primary IDE connector
19
CD-ROM audio connector
10
PATA secondary IDE connector
20
AGP slot
Replacing memory (all machine types)
The 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 memory modules, the following rules apply:
v System memory is divided into two channels (channel A and B). memory
connectors 1 and 2 are channel A, and memory connectors 3 and 4 are channel
B.
v
If memory 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, 333 MHz double data rate synchronous dynamic random
access memory (DDR SDRAM).
v
Use 128 MB, 256 MB, 512 MB or 1.0 GB (when available) memory modules in
any combination.
v
Memory modules are 25.4 mm (1.0 inches) in height.
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Hardware Maintenance Manual