I think the problem is that the seven digit number that begins with a "T" is probably on that sticker on the front, just above the female plug. Mine is faded, it's blank.
Is this where ya'll's T number is?
I can't figure how ANY of them could be different, as long as it's for a 790!?
I asked the seller, but I may need to contact Procom directly.
meanwhile, THE DAYS ARE PASSING BY!
