CopperLink 2173 High Speed Auto Rate Extender Kit (1 Local Unit x 1 Remote Unit), RJ45 Connectors only, 100-240VAC- Ethernet Extension - Extend 10/100Base-TX Ethernet up to 10,000 feet (3kilometers) - well beyond the 328-foot (100-meter) limitation - over a single twisted-pair, Cat 5e/6/7, or even coaxial cable- Operates Over Twisted Pair - Realize fiber-optic speeds without the expense - and hassle - of installing new cables or line-of-site wireless circuits.- Plug and Play - Set these units up straight out of the box. No configuration is required. Auto-sensing 10/100 Ethernet ports support full or half duplex operation.- Multiple Line Rates Supported - Boasting downstream line rates up to 168Mbps, the switch-selectable rate mode options optimize rate and reach for the noise environment, wire gauge/type and length.- Transparent LAN Bridging - Bypass network configuration requirements by transparently passing all higher layer protocols - including 802.1Q VLAN frames (tagged and untagged). Data-transmission mechanism is fully transparent to such IP video compression schemes as MPEG-4, H.264 and MJPEG.