USB, UB-U03II

Epson UB-U03II USB Interface Card for Receipt Printers

The Epson UB-U03II is a dedicated USB interface card that slots directly into a compatible Epson receipt printer. If your point-of-sale setup now requires a USB connection but your current printer only has a serial or parallel port, this card solves the problem without buying a new printer.

Who is this for?

The UB-U03II is aimed at owner-operators who are upgrading or expanding their till setup and need to bring an existing Epson printer in line with a USB-based system. A typical situation: you've switched to a new POS application or a tablet-based till that communicates over USB, but the printer on your counter only has an older interface. Swapping the interface card costs far less — and takes far less time — than replacing the whole device.

It's a practical fix for cafés, restaurants, retailers, and workshops where the printer itself is still working reliably and a full replacement would be hard to justify.

Installation and compatibility

The card fits into the expansion slot on your Epson printer. Before ordering, check that your model has a free UB-series expansion bay — you'll find the compatible model list in your printer's documentation, or get in touch with Vaivatta and we'll confirm it for you.

Manufactured in China. Covered by a 12-month warranty.

What does this mean in practice?

• ·Your printer stays in service when your till system moves to USB — no forced hardware replacement
• ·You avoid the cost and disruption of swapping out a unit that is otherwise working fine
• ·The USB connection runs reliably through daily use in busy café, restaurant, and retail environments
• ·One card swap keeps your setup consistent when adding a new POS terminal or changing software

Not sure if it fits your printer?

If you're uncertain whether the UB-U03II is compatible with your specific model, contact Vaivatta before placing the order. We'll check compatibility and help with installation if needed — saving you the back-and-forth of an unnecessary return.