Ethernet Interface Compatible with UB-E04 C32C824541 - USB Ready

In this review the focus is on a plug-in Ethernet interface module compatible with UB-E04 C32C824541 for a range of receipt printers. The bottom line: this module is for technicians or small business owners who need a reliable wired network connection and a USB option for legacy point-of-sale printers. It delivers straightforward network connectivity and a simple installation form factor, and the review highlights practical installation tips and the single biggest reason to buy - it replaces older UB-E03/UB-E02 modules while adding USB convenience.

Key Features

• Ethernet connectivity: Provides 10Base-T and 100Base-TX support so the printer can join wired networks for stable, low-latency printing.
• USB convenience: Includes a USB interface option to allow direct connection where a network port is not available or for initial setup.
• Plug-in form factor: The module installs as a plug-in expansion, keeping the printer footprint unchanged while adding network capability.
• Broad printer compatibility: Works with multiple Epson TM series models like TM-U220PB, TM-T81, TM-T88IV and others, easing parts sourcing for service technicians.
• Replaces older modules: Marketed as a replacement for UB-E03 and UB-E02, so it serves as a drop-in upgrade for systems needing a modern fast Ethernet option.

Who It's For

This product is aimed at POS technicians, repair shops, and small retailers maintaining legacy receipt printers who want to add or restore wired network access. It is especially useful where a reliable 100 Mbps wired path is preferred over wireless and where occasional USB connection is needed for local printing or setup.

It is less suitable for end users seeking a full-featured print server with advanced software management, wireless connectivity, or those who require manufacturer warranty support details beyond the supplied part number. If you need cloud printing or integrated Wi-Fi, look for a different solution.

Pros & Cons

Pros

• Restores network printing for older TM series printers without replacing the whole unit.
• Includes USB for flexible connection options during installation or troubleshooting.
• Supports Fast Ethernet speeds up to 100 Mbps for dependable receipt throughput.
• Simple plug-in module reduces installation complexity for technicians.

Cons

• Not a wireless solution; only supports wired Ethernet and USB connections.
• Installation requires care and following the power-off and running-in tips to avoid board damage.

Specifications

Manufacturer Part #	C32C824541
Device Type	Print server plug-in module
Network	Ethernet 10Base-T / 100Base-TX
Data Rate	100 Mbps
Interfaces	RJ-45 network, USB
Compatible Printers	TM-U220B/220PB/220PD/220PA, TM-T81/T82II/T88III/T88IV/T88V/T70/T90/T86L

Our Verdict

This Ethernet interface module is a pragmatic replacement for service technicians and small businesses that need wired network capability and occasional USB connectivity for legacy receipt printers. It is good value when repairing or upgrading compatible TM series printers because it restores modern fast Ethernet support without replacing the printer, provided the installer follows the recommended power-off and running-in precautions.

Frequently Asked Questions

Is this a wireless adapter?
No. This module provides wired Ethernet (10Base-T/100Base-TX) and a USB interface only.

Will it fit my TM series printer?
It is compatible with a broad set of TM-U220 and TM-T series models listed under the part number C32C824541; confirm your printer uses an expansion slot for a plug-in module.

Any installation warnings?
Yes. Turn off printer power before installing and follow the running-in tip for the print head to avoid mainboard damage.