TCM300-Z Series Models and Description:

The TCM300 is a Thermal Thin Card Printer Mechanism with Thermal ReWrite, MS Read, MS Write, and it comes with different interface options: Serial, USB, and Ethernet

See Below:

D - Serial Interface
MSRP: $2495.00 OUR PRICE: $1799.99

U - USB Interface
MSRP: $2575.00 OUR PRICE: $1849.99

E - Ethernet Interface
MSRP: $2975.00 OUR PRICE: $1999.99