Ergodexdx1InputsystemIt was a game enthusiast who first conceived of the Ergodex DX1 Input System, a USB input device by Ergodex, designed for users to place programmable keys anywhere on its 11-inch x 9-inch “DX1 Pad.” The concept is simple: You begin with 25 DX1 keys, place as many of them on the DX1 Pad in any layout you wish, and use the included software to assign functions to each one. Link.