Hello after many time
firstly thanks to add information monitor into options | Additional "2010-12-21 Added monitor vendor, model and serial number retrieval". I review the information retrieve but the field SERIAL no is correct, it should be same that physical tag, in Softperfect Network Scanner the serial is only number field but physical tag commonly is alphanumeric for manufacturers such as HP, Dell Etc.
here there is a link, use in a vbs that retrieve serial number require
also is important that the query retrieve last monitor was connected this is posible filtering the last date.