HP t5135 - Manual (Page 9)

Rear panel components
Figure 1-3 Rear panel components
(1) Cable lock slot (5) PS/2 connectors (2)
(2) Ethernet RJ-45 connector (6) Monitor connector
(3) Parallel connector (7) Serial connector
(4) Universal serial bus (USB) connectors (4) (8) Power connector
For more information, see the model-specific QuickSpecs at http://h18004.www1.hp.com/products/quickspecs/
QuickSpecs_Archives/QuickSpecs_Archives.html
ENWW Rear panel components 3