I have one laptop on my network with three NIC's [wired, USB dock, wireless]. Its listed in ERA v3.0.105 with each of its three MAC addresses so its using three seats of the product. My firm purchased enough seats for every computer but at 2-3 seats per physical computer we'll quickly run out. Is there a setting somewhere to exclude mac address from the key for clients? I've crawled the ERA server config line by line and didnt see one. The only thing I've found is on p16 of the latest ERA manual for English and says: "The behavior of ERAS related to certain network operations (such as renaming a PC) can be defined in ERAS Advanced Setup. It can help prevent duplicate entries in the Clients tab. For example, if one of the computers in the network has been renamed, but its MAC address remained unchanged, you can avoid creating a new entry in the Clients tab."] What options do I have for having multiple MAC addresses not eat up my seats?