Dell Precision R5400 (Mid 2008) - Manual (Page 8)

8
About Your Computer
Back Panel Connectors
1 network link integrity light 2 network adapter connector (primary)
3 network activity light 4 line-out connector
5 line-in connector 6 serial connectors (2)
7 keyboard connector 8 mouse connector
9 USB 2.0 connectors (3) 10 network activity light
11 network adapter connector
(secondary) 12 network link integrity light
7 9 6 5
4
8
1 2 3
12 11 10