How do I get a replacement USB for my Microsoft Wireless Mobile Mouse 4000?

When you replace the Battery on a Wireless Mouse you have to link the Mouse again with your USB receiver. There should be a Button on the bottom of the Mouse that could be marked, Reset, or Link or something similar. Just turn on your Mouse and hold this Button for a few second until the USB receiver finds the signal.

the USB receiver for your mouse is defective, DO NOT USE IT it could damage the USB port of the notebook replace the wireless mouse

Good luck!

Go here:
http://www.microsoft.com/hardware/download/download.aspx?category=MK
And download and install the software for your mouse

please check the battery of you mouse if not have complete charged then replace the battery and then keep pressing the button for 2-3 minut which is located on wireless device and then mouse will work fine.

its called a wireless adapter, and you should be able to order a replacement from here.

Order Desk at (800) 360-7561 to obtain a replacement. ... Microsoft Wireless Laser Desktop 4000

I have this same problem right now... What did you end up doing?

Instructions here

http://www.microsoft.com/hardware/documentation/default.aspx?type=Sets&sku=4GC-00002

Software here

http://www.microsoft.com/hardware/download/download.aspx?category=MK

You don't! Why do you need to open it.
Not sure what the problem is but try this.
Normal 0 Try disconnecting the Mouse from the USB port and reinstall the CD software program. When the program asks you to connect the Mouse to the USB port, do so and it should work.
Hope this helps. Bud

I'm having pretty much the same problem with my Microsoft Wireless 4000 mouse and my hp-compaq 8510p laptop. If I shut my machine down, or restart, my mouse no longer works. I have to uninstall/reinstall the Intellipoint software. The synaptics touch pad continues to work, but the mouse fails.

The MS keyboard & mouse receiver is effectively a USB hub with two devices connected to it. So, plugging it into the keyboard socket on the KVM switch may well work, depending on how that particular switch implements USB. If it just passes things through, it should be OK. On the PC side you should only need to plug in the USB cable from the switch's keyboard port.