Data cables carry digital information between all sorts of devices, such as your router and computer, or even some sound systems.
Asheridge CAT5E Cable unshielded Red (per metre)
£0.29
Chord USB SilverPlus cable
£54.95
Denon AK-DL1 Link cable
£439.95
QED Qunex Qwire firewire interconnect
£24.95