This is same thing as here. All of them work (for displayport conversion), but microUSB socket is not soldered correctly. These can ONLY be powered by external 5V source (see manual for connection pins), or by fixing (resoldering) the microUSB socket. These have been flashed with latest firmware and DO WORK - as long as power is connected externally. These a all DisplayPort-MINI type.
51-pin connector clip tab is also intact.
This product was added to our catalog on Saturday 01 February, 2014.