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.
High-speed data transfer of up to 5 Gbps
Use multiple port extenders together to add more than one USB port to the front
Plug-n-Play, Hot swappable, and Hot pluggable
Description
Easily extends the USB port from the back of your iMac to the front for convenient easy access to add additional USB devices. USB 3.0 compliant and backwards compatible with USB 2.0 and USB 1.1