When you launch SpectraView II for the first time it will ask you for a serial number:
“Enter the serial number you received with software”
I could not find the number on the sensor box - so I contacted NEC support and got this response:
NEC Tech Support [email protected]
Dear Jon Gallant,
The SpectraView serial number would have come with the software when it was originally purchased. Usually on the USB card or disk sleeve, depending on how long ago it was bought. We do not have record of your original serial number you received. The serial does start with the letters SV. If you still are unable to locate this we will need the serial number of your monitor and a copy of the receipt showing the purchase date for the software.
Fortunately, I was able to find the original USB dongle that came in the original box:
If you can’t find your USB dongle, then you’ll need to send your monitor serial number and a copy of your receipt to NEC and they’ll send you the serial number.
Hope this helps.