HP ProBook 5220m Notebook PC - Manual (Page 37)

If the computer still cannot make a connection to a WLAN, restart the wireless router. For details, refer
to the router manufacturer's instructions.
Connecting to a local area network (LAN)
Connecting to a local area network (LAN) requires an 8-pin, RJ-45 network cable (not included). If the
network cable contains noise suppression circuitry (1), which prevents interference from TV and radio
reception, orient the circuitry end of the cable (2) toward the computer.
To connect the network cable:
1. Plug the network cable into the network jack (1) on the computer.
2. Plug the other end of the cable into a network wall jack (2).
WARNING! To reduce the risk of electric shock, fire, or damage to the equipment, do not plug a modem
or telephone cable into the RJ-45 (network) jack.
Using the modem
The modem must be connected to an analog telephone line using a 6-pin, RJ-11 modem cable
(purchased separately). In some countries or regions, a country- or region-specific modem cable adapter
(purchased separately) is also required. Jacks for digital PBX systems may resemble analog telephone
jacks, but they are not compatible with the modem.
WARNING! Connecting the internal analog modem to a digital line can permanently damage the
modem. Immediately disconnect the modem cable if you accidentally connect it to a digital line.
Connecting to a local area network (LAN) 25