8. Wireless network devices Cable modem : is a device that enables you to hook up your PC to a local cable TV line and receive data at about 1.5 Mbps. Wirelss router : is a device that performs the functions of a router but also includes the functions of a wireless access point and a network switch. PCI wireless adapter : allows a computing device to join a wireless LAN. Wireless network adapters contain a built-in radio transmitter and receiver Wireless adapter card : external adapters that allow computers, both laptops and desktops, to connect to wireless (also known as WiFi) networks.