![](/images/new-backgrounds/1220849/22084923x1.webp)
Figure 1-5. Expansion Base — Back View
15.Universal serial bus ports (USB).
16.
17.Serial port (COM1).
18.Parallel port (LPT1). Use this port for a parallel printer or other parallel device.
19.External monitor port.
20.PS/2 mouse port.
21.PS/2 keyboard port.
22.LAN port (works only if the computer has a
23.AC adapter jack.
Product Information | HP Omnibook 500 |