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Epson C31CH51001 TM-T20III USB POS Receipt Printer — main product image
Epson

Epson C31CH51001 TM-T20III USB POS Receipt Printer

★★★★★4.2 (227 reviews)

A fast, reliable USB thermal receipt printer built for Square POS and everyday retail use.

$209.90*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Epson TM-T20III (C31CH51001) is a thermal receipt printer designed for small to mid-sized retail and hospitality operations. It prints monochrome receipts at up to 250 millimeters per second on standard 3-inch thermal paper, providing the speed needed to handle high-volume checkout environments. With 32 MB of onboard memory and a straightforward USB connection, the printer is built for reliability and ease of setup rather than wireless versatility.

This particular model is confirmed compatible with Square Stand and Square Register via USB, making it a practical choice for businesses already invested in the Square ecosystem. However, it is important to note that this is a USB-only device — there is no Bluetooth or Wi-Fi connectivity, and it does not work with Square Terminal or handheld Square readers. For businesses that need a fixed-position receipt printer at a checkout counter, the TM-T20III delivers consistent performance with the low operating costs inherent to thermal printing technology, since there are no ink or toner cartridges to replace.

Key Features

Compatible with Square Stand and Square register - USB only

USB interface ONLY - Not blutooth or WIFI

To Use with Square, you must have the Square Stand Or Square Register

Specifications

Brand
Epson
Model
C31CH51001
Printing Technology
Thermal
Connectivity
USB
Max Print Speed
250 mm/s
Max Media Size
3 x 5 inches
Memory
32 MB
Printer Output
Monochrome
Dimensions
11.42 x 11.42 x 7.87 inches
Weight
5.61 pounds
POS Compatibility
Square Stand, Square Register (USB only)

Pros & Cons

👍 Pros

  • Fast print speed of 250 mm/s keeps transactions moving quickly at the point of sale.
  • Thermal printing eliminates the ongoing cost and hassle of ink or toner replacement.
  • Confirmed compatibility with Square Stand and Square Register for straightforward POS integration.
  • Compact footprint at approximately 11.4 x 11.4 x 7.9 inches fits easily on a counter or shelf.
  • 32 MB built-in memory handles print jobs reliably without requiring an external buffer.

👎 Cons

  • USB-only connectivity — no Bluetooth or Wi-Fi option, which limits placement flexibility.
  • Only works with Square Stand or Square Register, not with Square Terminal or mobile Square setups.
  • Thermal paper receipts can fade over time, which may be an issue for records that need long-term retention.
  • At 5.61 pounds, it is not designed to be portable or moved frequently between locations.

Frequently Asked Questions

Yes, but only via USB connection and only when used with the Square Stand or Square Register. It is not compatible with Square Terminal or Square Reader.
No. The TM-T20III (model C31CH51001) is a USB-only printer. If you need wireless connectivity, you will need a different model.
It supports thermal receipt paper up to 3 inches wide, which is the standard width for most POS receipt rolls.
The TM-T20III prints at up to 250 millimeters per second, which is fast enough to keep up with busy checkout lines.
No. As a thermal printer, it uses heat to print on specially coated thermal paper, so there are no ink or toner cartridges to buy or replace.

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