The Xtenda X300 consists of an X300 PCI card and Xtenda Multi Box. The Xtenda PCI card is built around NComputing's proprietary multi-user computing technology for sharing one PC with up to 7 users. The Xtenda PCI Card has three RJ45 ports with each linking to that of an individual Multi Box via a LAN cable. This connection also provides power transmission meaning one less cable dedicated to power. You can install up to two Xtenda PCI Cards into a single computer enabling the computer to have maximum of 7 total users.