The Osmium features two USB ports (2.0 and 3.0) and two 3.5 mm audio jacks (audio and microphone). Both audio connections and the USB 3.0 can be found on the right side of the keyboard; the USB 2.0 is just around the right corner, on the upper side. This hub is fed by a cable that ends in four connectors, all of them protected by plastic covers. The thick and braided cable comes out of the upper side.
Flipping the keyboard over, the user finds two latches for the wrist rest and four retractable feet.
Usually, gaming-grade keyboards come with an extra set of WASD keys, but the Osmium comes with four extra keys with symbols that can be used to decorate the peripheral or mark some important function or macro programmed by the user. They can be extracted by a special tool, also included.