This is an operational frame that contains 10 each SDA-1112 serial digital video re clocking distribution amplifiers and 10 each SDA-1102 serial digital video non-re clocking distribution amplifiers and has dual power supplies for redundancy. The purpose of this frame is to receive a 75 ohm SDI source and distribute to 9 outputs destinations. This unit and the included modules are currently sold for over $5,000. so if you need something like this for a studio application this is a great price. The Densite frame as well as the SDA-1112 and SDA 1102 plug in modules data sheets and specifications can be downloaded as a pdf from the Grass Valley website. Thank you for looking