HP USB Module with F/W SV - old or new style (both are compatible)
Manufacturer is shipping some modules as small USB dongles, and some as larger USB boards. Both are fully compatible and usable. Photo may not represent exact USB module sent.
Compatible with:HP DESIGNJET T520 24-IN EPRINTER
HP DESIGNJET T520 36-IN EPRINTER
HP Designjet T120 24-in ePrinter