Aluratek''s USB 3.0 Port Extender for iMac brings an easily accessible USB 3.0 port to the front of your computer. Apple''s recent iMac models are designed with the USB ports hidden on the backside making connecting and disconnecting peripherals a challenge especially if you are frequently accessing these ports.Made specifically to work with iMac (released November 2012 or later), AUHM0301F simply plugs into one of the USB ports on the back of your iMac. The creative "J" shape design of AUHM0301F extends a USB 3.0 port around to the front of your computer and snugly attaches into one of the air-vent holes on the bottom edge of your iMac. You can use multiple extenders if looking to connect multiple USB devices