Did you just stumble upon a file that has been digitally signed by NEC Personal Products, Ltd.? If that's the case, please read on.
You'll typically notice NEC Personal Products, Ltd. when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screengrab shows:

You can view additional details from the NEC Personal Products, Ltd. certificate with the following steps:
Here is a screenshot of a file that has been digitally signed by NEC Personal Products, Ltd.:

As you can see in the screengrab above, the Windows OS states that "This digital signature is OK". This means that the file has been published by NEC Personal Products, Ltd. and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can view all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also examine the address for NEC Personal Products, Ltd., such as the street name, city and country.
VeriSign Class 3 Code Signing 2009-2 CA, VeriSign Class 3 Code Signing 2004 CA and VeriSign Class 3 Code Signing 2010 CA has issued the NEC Personal Products, Ltd. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the NEC Personal Products, Ltd. files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/55 | NTMETER.exe |
| 0/57 | NTMETER.exe |
| 0/55 | DispSw.exe |
| 0/56 | DispSw.exe |
| 0/55 | DispSw.exe |
| 0/56 | PeakShiftTool.exe |
| 0/54 | necmfk.exe |
| 0/57 | AVDm.exe |
| 0/56 | NPSpeed.exe |
The detection percentage is based on the fact that I have collected 501 scan results for the NEC Personal Products, Ltd. files. 0 of these scan reports came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: