WorkSetup Guide

Epson TM-T88IV USB With Power Supply vs RS232 Serial: Which POS Printer Fits?

Choose the USB TM-T88IV when a power supply and USB cable are part of the setup; choose the RS232 serial model for a lower listed price when serial connectivity suits the register station.

Last updated Jul 28, 2026

A receipt-printer replacement can hinge on two practical details: whether the register setup uses USB or RS232 serial, and whether a power supply is already on hand. These two used Epson TM-T88IV thermal POS receipt printers share a 3.13-inch print width and JamFree Auto-Cutter, but their connections and included equipment point to different counter setups.

Quick verdict

Pick the Epson M129H TM-T88IV Thermal POS Receipt Printer USB Printer w Power Supply for a USB-based restaurant or retail counter where including the power supply and USB cable matters. Its listed price is USD 93.13.

Choose the Epson TM-T88IV M129H RS232 Serial Thermal POS Receipt Printer NO Power Supply when the register station is built around an RS232 serial connection and a power supply is already part of the setup. At USD 34.64, it is USD 58.49 below the USB model's listed price, but its title and description make clear that the power supply is not included.

At-a-glance comparison

DetailEpson TM-T88IV USB with Power SupplyEpson TM-T88IV RS232 Serial No Power Supply
Listed priceUSD 93.13USD 34.64
ConnectionUSBRS232 serial / wired
Power supplyIncludedNot included
Cable includedUSB cable includedNo power or data cables included
Print methodThermalThermal
Print width3.13 in3.13 in
CutterJamFree Auto-CutterJamFree Auto-Cutter
Stated industryRestaurant and retailRetail

Where each Epson TM-T88IV wins

The USB-with-power-supply configuration wins on setup completeness. It pairs USB connectivity with a power supply and USB cable, a combination that suits a counter being assembled around a USB interface. It is also described for restaurant and retail environments, which may make it the more natural match where either setting is relevant.

The RS232 serial configuration wins when serial connectivity is the requirement. It has the same thermal printing method, 3.13-inch print width, and JamFree Auto-Cutter as its USB counterpart, while carrying the lower listed price. The tradeoff is straightforward: it is a serial receipt printer sold without the power supply, power cable, or data cables.

Product notes

Epson M129H TM-T88IV Thermal POS Receipt Printer USB Printer w Power Supply

This Epson is the clearer pick for a USB register station that needs the core power and USB pieces included. The title specifies USB and a power supply, while the description adds one USB cable, so the connection type and included equipment align cleanly. It uses thermal printing, has a 3.13-inch print width, and includes the JamFree Auto-Cutter shared by both choices. Restaurant and retail are both named as industries, giving it a broader stated setting than the serial model. The limitation is its USD 93.13 listed price, the higher of the two. It is also used, so this choice is best framed around the included USB-oriented setup rather than condition-based expectations.

Epson TM-T88IV M129H RS232 Serial Thermal POS Receipt Printer NO Power Supply

This Epson fits a retail counter that specifically uses an RS232 serial connection. The lower USD 34.64 listed price is its main financial advantage, and it still brings thermal printing, a 3.13-inch print width, and the same JamFree Auto-Cutter found on the USB printer. Its description identifies good pre-owned condition and notes cosmetic scratches, scuffs, and scrapes from normal use. The central limitation is explicit in the title: no power supply. The description also states that no power cable, data cables, or additional accessories are included. Choose this serial model when those missing pieces are already accounted for and the register interface is RS232 rather than USB.

Final choice by use case

For a USB-based counter, select the Epson M129H TM-T88IV Thermal POS Receipt Printer USB Printer w Power Supply. Its included power supply and USB cable are the deciding details. For an RS232 serial retail setup with separate power and cabling already available, select the Epson TM-T88IV M129H RS232 Serial Thermal POS Receipt Printer NO Power Supply. Both retain the same thermal format, 3.13-inch width, and auto-cutter, so interface and included equipment should make the final call.

Products in this article
Epson M129H TM-T88IV Thermal POS Receipt Printer USB Printer w Power SupplyUSD 93.13View on eBayEpson TM-T88IV M129H RS232 Serial Thermal POS Receipt Printer NO Power SupplyUSD 34.64View on eBay
Epson M129H TM-T88IV Thermal POS Receipt Printer USB Printer w Power SupplyUSD 93.13View on eBayEpson TM-T88IV M129H RS232 Serial Thermal POS Receipt Printer NO Power SupplyUSD 34.64View on eBay