"Small Foot Print, IR wireless technology with built in Trackball and Mouse Buttons. The KSI-2105 features an 86 notebook style keyboard with full 104 key functionality. Smooth, effortless cursor movement with self cleaning trackball. The Infrared transmission protocol broadcasts up to 9 meters in a 45º conical projection giving broad receiver coverage from anywhere in the room. Battery life of 900 hours." More info

The KSI-2109 features a full travel, desk top style keys and a large easy to locate space bar for the fast, touch typist. Smooth, effortless cursor movement with self cleaning trackball. The Infrared transmission protocol broadcasts up to 9 meters in a 45º conical projection giving broad receiver coverage from anywhere in the room. Battery life of 600 hours. Price includes a PS/2 Infrared receiver. USB receiver available seperately. More info

Wireless Infrared (IR) Technology, full size Keys, self cleaning Trackball, compact, space saver More info

Wireless Infrared (IR) Technology, USB IR receiver More info

All Key Source International IR keyboards come standard with a PS/2 compatible receiver unit and AA Batteries. The ACIR6 features a wide angle detector unit, four LED indicators (Num, Caps, Scroll, Power) No drivers required, simply plug and play. IR Receiver units can be ordered separately. More info