IBM ThinkCentre 8143 - Installing Memory

The following illustration shows the locations of parts on the system board.
1 12V power connector 14 SATA 1 IDE connector
2 Diskette drive connector 15 Cover presence switch connector
3 Speaker connector 16 Power supply connector
4 DIMM connector 4 17 PCI Express x16 graphics slot
5 DIMM connector 3 18 PCI Express x1 slot
6 DIMM connector 2 19 PCI slot
7 DIMM connector 1 20 PCI slot
8 Clear CMOS/Recovery jumper 21 Battery
9 Front Panel connector 22 Microprocessor
10 PATA IDE connector 23 Microprocessor fan connector
11 SATA 4 IDE connector 24 Microprocessor heat sink
12 SATA 3 IDE connector
13 SATA 2 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.
System memory is divided into two channels (channel A and B). DIMM connectors
1 and 2 are designated as channel A, and DIMM connectors 3 and 4 are designated
as channel B. If DIMMs are present in both channels, your computer operates in
dual channel mode.
Your computer has either double data rate (DDR) or double data rate 2 (DDR2)
memory. The type of memory required depends on the system board that is
installed.
To determine the type of memory required:
12 User Guide