Hypertec equivalent Microsoft 36w PSU for Surface Pro 3 and SP4 and Surface Pro Book 3 and 4. (Whilst this will work it is not ideal for the Intel M3 Processor variant which uses a 65w adaptor)
ONLY needed if sender unit does not support PoH48V Receiver unit is normally powered via CAT cable PoH If sender unit does not support PoH 48V this AC adapter can be ordered as accessory.