Hmm. You can talk with the supplier, however, it would be a good idea to open a support case with support.multitech.com. Either the supplier did this, or there is an OEM problem of some kind. Whoever/whatever put that ‘$’ in the product-id is what I believe is causing this problem. The support engineers at Multitech can help you fix this, but someone needs to not be messing up the EEPROM values. I don’t think this EEPROM information was what was set in production out of the factory at Multitech.
It may be possible there is/was some kind of problem with the EEPROM. The Multitech support team can help you fix this and should be able to straighten out what is going on with the reseller.
Jeff