Hi! I've got a Xerox WorkCentre 6605/DN which came with the toner cartridges pre-installed (so I don't have their boxes). I couldn't find the part number in the cartridge (there are only codes like *B792* and JP-060K 98532-3C5-1018000571). In the printer panel, under Supplies section it shows "XEROX(R) Genuine Toner - Reorder Part # Use genuine Xerox supplies". How can I check the toner cartridge part number in other to get an equal and compatible one?