The Accuratus 540RF 2.4GHz has a small footprint and an integrated touch pad for those applications where space is limited, in retail & hospitality, rack server drawers or at home. Our 540 is a big winner with major retail stores, this beautifully constructed keyboard offers all the facilities of a standard keyboard, but with some of the 'fat' removed. Though smaller than a standard keyboard, the 540 is still very tough using reliable membrane technology. Small, tough & reliable - It's got to be the 540.