# System requirements

To install and use AG 2000-BRI boards, your system must have:

- Natural Access installed.

- An available PCI bus slot.

- An H.100 bus connector cable if you are connecting to any other H.100 boards.

- Cables to connect to an S0 or T0 trunk.

- A grounded chassis (with three-prong power cord).

NMS recommends an uninterruptable power supply (UPS) for increased system reliability.