Bi-Directional Usage, Available For Connecting 2 Sources And 1 Hdmi Display, Or 1 Source And 2 Hdmi Displays. Swap The Signal Instantly Between 2 Sources Or 2 Displays By Simply Pressing The Button. Support Up To 4K Ultra-Hd Resolution. Backward Compatible. Specification Of Signal Transmission Depends On The Devices And The Cables. 3M Or Shorter Hdmi2.0 Cable (Awg26 Or Thicker Conductor) Is Suggested For 4K@60Hz, And 10M Or Shorter For 4K Output. Led Indicator For Identifying The Working Status Expression Of The Ports. Solid Aluminum-Alloy Housing To Ensures Durability. Premium Construction, To Prevent Damage To The Unit From Static Electricity, And To Ensures Well-Functioning Within +80C/-40 C Temperature. Plug And Play. No Power Adapter Needed.