ADSL
ADSL pci adaptor, USB modem, wireless router

Ethernet
LAN card adaptor, switching hub, hub.

Multi-Media
Storage media, MP3 player, Digi Camera CF reader

Bluetooth
Bluetooth appliances, wireless access, bluetooth USB modem

VoIP
Voice over IP phone

Broadband
cable and leased router

ISDN
ISDN PCI adaptor, USB adaptor

Modem
internal adaptor, external RS-232, USB, module.