: High-speed 12 Mbps data transfer, bi-directional communication, and support for peripheral devices like cash drawers.
The UB-U03II is a Connect-it interface module designed to replace the standard serial or parallel ports on Epson TM-series printers. Epson Ub U03Ii Driver Windows 10
The UB-U03II uses a chipset. You need the Prolific driver. : High-speed 12 Mbps data transfer
The most reliable way to install this driver is through the official Epson Download Center . Epson Ub U03Ii Driver Windows 10