Epson
Epson TM-T20III Receipt Printer, USB + Parallel (C31CH51A9981)
Epson TM-T20III Receipt Printer, USB + Parallel (C31CH51A9981)
Compatible with:
C31CH51A9981
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Product Description
Epson TM-T20III Thermal Receipt Printer – USB + Parallel
SKU / MPN: C31CH51A9981
The Epson TM-T20III is a compact 80mm-class thermal receipt printer for retail, restaurant, hospitality, grocery, and service-counter POS environments. This exact configuration provides USB and parallel connectivity.
Lifecycle note: Epson now identifies the TM-T20IV as the replacement product for the TM-T20III family. If you are maintaining an existing parallel-port installation, match your interface requirements carefully before substituting a newer model.
Quick Answer
Choose C31CH51A9981 when you specifically need the TM-T20III with USB + parallel connectivity. For a new deployment, compare the TM-T20IV before buying because Epson designed it as the successor to the TM-T20III.
Key Specifications
| Manufacturer | Epson |
| Model | TM-T20III |
| SKU / MPN | C31CH51A9981 |
| Print Method | Direct thermal |
| Maximum Print Speed | Up to 250 mm/sec |
| Interfaces | USB + Parallel |
| Paper Class | 80mm / 3-inch receipt paper |
| Successor Family | Epson TM-T20IV |
Best For
- Replacing an existing TM-T20III parallel-port printer
- Legacy POS systems that still require a parallel printer interface
- Retail and restaurant receipt printing
- Organizations standardizing on Epson ESC/POS receipt printers
Replacement / Upgrade Guidance
Epson states that the TM-T20IV is designed to smoothly replace the TM-T20III, including similar printing behavior and driver compatibility. However, interface choices differ by configuration. Do not replace a parallel-port TM-T20III without confirming how the host system will connect to the newer printer.
Compatibility
Confirm POS software, operating system, Epson driver support, paper width, cash-drawer connection, and especially the required host interface. Parallel is uncommon on current systems, so this exact SKU is most appropriate when an existing deployment specifically requires it.
What You May Need
Common Buying Mistakes
- Ordering this parallel-interface model for a modern PC that has no parallel port.
- Assuming every TM-T20III SKU has the same interfaces.
- Buying an older TM-T20III for a new installation without comparing the current TM-T20IV.
- Assuming a cable or accessory is included unless stated with the exact configuration.
Frequently Asked Questions
What replaces the Epson TM-T20III?
Epson identifies the TM-T20IV as the replacement family for the TM-T20III.
Does C31CH51A9981 have Ethernet?
No. This listing is for the USB + parallel configuration.
Should I buy the TM-T20III or TM-T20IV?
For a new installation, the TM-T20IV is generally the current family to compare. This TM-T20III SKU is especially relevant when replacing an existing installation that requires the same legacy interface.
Can Spartan POS help confirm the correct replacement?
Yes. Send us your current printer SKU, POS software, operating system, and connection type and we can help identify the safest replacement path.
