Support Information:
Device Type: Input Devices (mouse, etc.)
Manufacturer: Motorola
Model: usb blue tooth 4.0.1.2500
Interface: USB
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=694&qa5=9&qa7=1500&dp=3&qm0=usb+blue+tooth+4.0.1.2500&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=Motorola+Input+Devices+%28mouse%2C+etc.%29++usb+ blue+tooth+4.0.1.2500+Windows+XP+Professional+) | Research manufacturer Motorola (http://members.driverguide.com/index.php?action=getinfo&companyid=694)

I believe your request is missing a valid Motorola model number (like perhaps PC850, HS820, H200, etc. ). Not sure if these will help, but it's all I could find with what I had to work with:

http://direct.motorola.com/Hellomoto/NSS/PC850BTSW/

http://www.megaupload.com/?d=PGYVUZ9Z (motodrivers.zip, (44.4 MB.)

http://www.megaupload.com/?d=4KIY1AN5 (PC850 ISO, 73.6 MB.)

And here's a site with loads of drivers: http://www.humpa.com/vzw/