IBM MICRO TOWER 2169 - Manual (Page 123)

121
Power Supply
This system has a 150-watt switching power supply.
1. To remove the power supply. You must remove the top
cover first.
2. Disconnect the power cable from the riser board and
all drives.
3. Remove the screws in the machine rear that secure
the power supply.
Memory (DIMM)
This system has 2 system memory module sockets, DIMM 0
and DIMM 1. These sockets hold dual in line memory modules
(DIMM) that contains 3.3V signal or double-sided synchronous
DRAM (SDRAM).
The maximum memory size is 256 MB total.