IBM System x3250 M4

System-board external connectors
The following illustration shows the external input/output connectors on the system
board.
DIMM 1 DIMM 2 DIMM 3 DIMM 4
Microprocessor
Video
Serial (COM1)
NMI button
Ethernet connector 2/
USB connectors 3&4
Ethernet connector 1/
USB connectors 1&2
Chapter 2. Installing optional devices 21