ORICO SuperSpeed USB 3.0 Hub Extension Cable Adapter for 21.5 inch iMac - White iMac USERS SOLUTION - Designed specifically for 21.5 inch iMac. You don't need to reach of the monitor to plug-in your USB Device, just simply use Orico Superspeed 3.0 extension cable adapter. HIGH SPEED TRANSFER RATE - Data transfer speed of USB3.0 reaches of up to 5Gbps, backwards compatibility with USB 2.0 / 1.1 SOFTWARE INDEPENDENT - No driver nor software needed. It automatically detect your plug-in device. SOFTWARE INDEPENDENT - No driver nor software needed. It automatically detect your plug-in device. WARRANTY - 18 MONTH WARRANTY WITH LIFETIME TECHNICAL SUPPORT - All ORICO products purchased through Amazon include an 18 month warranty and lifetime technical support. If for any reason you are dissatisfied with your new product, just let us know and we promise to make it right.