communication devices
Electronic devices allowing computers to exchange data.
modem 
Device that converts digital signals into analog signals so that computers can communicate with each other over telephone lines.
wireless network interface card 
Expansion card with an integrated antenna; it links a computer to a network access point transceiver via radio waves.
network access point transceiver 
Device that links a computer network linked by cable and a computer fitted with a wireless network interface card.
network interface card 
Expansion card that connects a computer to a computer network.