System-board external connectors
The following illustration shows the external input/output (I/O) connectors on the
system board.
Mouse
Keyboard
Serial 1
(COM 1)
Parallel
Video
USB 4
(RJ45) Ethernet 10/100/1000
(RJ45) Ethernet 10/100
(for Remote Supervisor Adapter II
SlimLine)
USB 3
NMI button
Serial 2
(COM 2)
1
2
3
4
5
6
7
8
9
10
11
12
DIMM LEDs
20 System x3400 Types 7973, 7974, 7975, and 7976: User’s Guide