Full Details from Amazon.com : http://www.amazon.com/gp/product/B00DNULHHY?tag=onigi-20

StarTech.com 2-Port 2-to-1 USB 3.0 Peripheral USB Powered Sharing Switch Black USB221SS

Reduce operating costs by sharing peripheral devices
Save time with SuperSpeed USB 30 data transfer rates
Push-button operation for simple switching
USB 30 data transfer rates up to 5 Gbps
Connect a USB hub to share additional peripherals
Push-button controls for switching between computers