The EAGLE control unit can directly supply power to a SBIG STT or STF camera with this cable. PrimaLuceLab builds the appropriate 12V power supply cables in various lengths. All EAGLE-compatible power cables have a jack on the camera/mount/accessory side (for 12V power supply) of the instrument they are designed for. On the other side they have an 8A plug with a screw to prevent being disconnected accidentally from the EAGLE.