SY UHD-S41A - 4K UHD, 4-port HDMI Switcher KVM, USB powered, including USB cable

Four-input, single-output HDMI video switcher with both a manual and an auto selection mode. This switcher is useful for switching up to four HDMI sources to a single display device.

Complete with 5V power cable that plugs into an available USB socket.

Plenty of info on Google.

Royal Mail 'signed-for' delivery £4.00 anywhere in mainland England.

Thanks for looking.