?What You Get?Package comes with: 1 x USB kvm switch , 4 x USB 3.0 A female to A female Cable, 1 x micro usb charging cable , 1x User's Manual. YINNCEEN provides 12 months free worranty for our customers, if you have any question, feel free to contact us at any time and we will get back to you as soon as possible. ?Ultra High Speed Data Transfer?The keyboard and mouse switcher supports ultra-fast USB 3.0 data transfer rates of up to 5Gb/s (10 times faster than USB 2.0), and is backward compatible with USB 2.0 and USB 1.1 devices. ?Wide Compatible Systems?This keyboard mouse splitter with great compatibility, such as Windows 10/8/8.1/7/Vista/XP, Mac OS, Linux, Chrome OS and ect. No need to install additional drivers, plug and play, very convenient!. ?One-button Switch Design?: this 4 port USB sharing Switch with 4 button and 4 LED indicator lights, you can easily switch between 4 computers by a single click on the button and the corresponding LED on for indicating the active computer. ?4 Computers Sharing 4 USB Devices?this 4 port USB Switcher allows up to 4 computers to share 4 USB 3.0 peripheral devices, such as printer, scanner, mouse, keyboard, USB disk, etc. Without constantly swap cables or set up complicated network sharing software, It's a good choice if you have multiple PCs or Macs.