I have recently bought a Wireless computing RF-250 of ebay. When I received it the keyboard worked fine but Something is wrong with the Keybord/touchpad or the receiver box. I have tried everything on the company site and nothing helped. The touchpad will work for anywhere between 3 to 40 sec. When i remove the batterys and put them back in the same thing will happen. I have email the company and they said that the PS/2 connector in the keyboard is not well soldered and to only send the keyboard but it would cost $100 for the repair. I sure I could do that my self but Iam not sure that is the problem. The man who sold it will only give me a refund not a trade for the same item.