StarTech.com 2x2 HDMI Video Wall Controller - 4K 60Hz HDMI 2.0 Video Input to 4x 1080p Output - Video Wall Processor for Multi Screen Display - Video Wall Splitter - RS232/Ethernet Control. Video port type: HDMI, USB port type: USB Type-A. Material: Metal, Product colour: Black, Maximum refresh rate: 60 Hz. AC input voltage: 100 - 240 V, AC adapter input current: 1 A, AC adapter output voltage: 24 V. Certification: CE, FCC, REACH. Width: 165 mm, Depth: 230 mm, Height: 45 mm