VGA, HDMI, USB, LAN, and AV cables all use different connectors and cabling to transmit audio/video signals or data between electronic devices. VGA uses a 15-pin connector to transfer analog video from a computer to a monitor. HDMI supports digital audio/video on a single cable through a 19-pin connector. USB transfers both data and power through connectors that come in standard, mini, and micro sizes. LAN cables like Cat5 and Cat6 use 8-wire cabling to connect devices for networking and Ethernet. AV cables transmit audio and composite video with RCA connectors.