Sprint Nextel U727 - Manual (Page 117)

Section 2D: Troubleshooting Tips 109
Macintosh
To verify that the correct driver is installed:
1. Uninstall the existing driver.
2. Install the driver from the Sprint Mobile Broadband USB
modem installation CD.
To uninstall the existing driver:
If you would like to remove the driver and its associated files from
your machine, delete the following files (requires Administrator
pemissions):
ⅷ /System/Library/Extensions/NovatelWireless3G.kext
ⅷ /Library/Receipts/.pkg file related to Sprint or Novatel
ⅷ /Library/Modem Scripts/EVDO Support
The device listings should be removed.