NEC MH160 - Manual (Page 20)

2-10 Handset Administration Tool Installation
NEC MH150/MH160 Mobile Handset Administration Tool-Installation and User Guide - Issue 1
Step 8 The following warning message from the Microsoft Wizard displays. The
USB driver files are proprietary to SpectraLink and were not submitted to
Microsoft for testing. They were fully tested by SpectraLink to more
exacting standards and will not harm your system. Click Continue
Anyway
Figure 2-10 Warning: Software has not passed Microsoft testing
.
Step 9 Microsoft Wizard installs the USB driver software
Figure 2-11 New software is being installed
.