Review on 2-In-4 USB 2.0 Switch Box - SGEYR Metal, One-Button Swapping & 2 Pack A To A Cable For Printer/Mouse/Scanner Sharing Between PCs by Philip Berry

I used this to allow my wife to swap between here work laptop and a desktop computer using one wireless mouse and keyboard. Power can be supplied through the A to A input cable from the either computer or by the micro USB port near these two computer inputs. Came with all the necessary cables for input from computer to switch. Only downsides to this design appear to be no hot key to swap inputs and no mounting holes/mechanism. Everything feels solid to the touch and input is fast and responsive. I have not used this with more than a wireless keyboard and mouse but you can use this to share printers and drives as well. If they had made this mountable I would say this is perfect. Also, the inputs are on opposite sides so think about how you want to manage you cables before you set this up.