HP Compaq Presario,Presario 2100 Reference Manual page 15

Getting Started with Your Notebook
Identifying Parts of the Notebook
14 AC adapter jack.
15 Two USB ports.
16 RJ-45 network jack. Connects a network
cable.
17 PS/2 port.
18 Parallel port (LPT1). Use this port for a
parallel printer or other parallel device.
6 Reference Guide
19 External monitor port.
20 S-video out jack.
21 Kensington lock slot (security connector).
22 RJ-11 jack. Connects a modem cable.
23 IEEE 1394 port (select models only).
24 PC Card and CardBus slot and buttons.
25 Floppy disk drive (select models only).