I have a Wireless Desktop 2000.
The model 1423 transceiver died, so I called Microsoft suplimental parts at 1-800-360-7561.
They said the keyboard, mouse, and transceiver are all matched, so I can't just buy a new (universal) transceiver.
The agent asked for the product ID number from the keyboard. He looked that up and found the applicable transceiver. He said there was a 3 year warranty, so they would send a replacement for FREE. But it takes about 3 weeks to process and ship the part. Guess
I'll have to buy a spare mouse in the meantime.
The store where I bought the product said there was no way to get a new transceiver because they were all different. Each transceiver is paired with a mouse and/or keyboard. I would just have to buy the whole set again. They said it wasn't uncommon to have
the transceivers go bad.
Hats off to Microsoft for the warranty service, but it seems they should have some way to sell replacements locally for the transceivers. Why not just have them programmed after purchase to the users wireless devices.