Citizen CT-S4500SRSUBK Thermal POS Printer

Overview

The Citizen CT-S4500SRSUBK is a compact thermal POS printer designed for retail and hospitality point-of-sale environments. This unit ships with integrated internal power supply, eliminating the need for a separate external PSU. Connectivity includes both USB and serial (RS-232) interfaces, so it integrates into legacy and modern POS systems without adapter complexity. The model designation CT-S4500SRSUBK specifies the serial + USB dual-port configuration with internal power in black finish.

Compatibility

The CT-S4500SRSUBK connects to any POS terminal, cash register system, or custom application that supports standard USB Printer Class or RS-232 serial communication. It is compatible with Windows, Linux, and macOS environments via driver installation. If you are replacing or supplementing an existing Citizen thermal printer in a multi-terminal setup, verify that your POS software supports dual connectivity; most modern systems do, but legacy single-port configurations may require port selection during driver setup.

Installation Notes

Mount the printer on a countertop or in a fixed POS station. The internal power supply draws standard 120V AC input (US/Canada standard), so verify outlet availability near the intended location. Connect the appropriate cable (USB or serial) to your POS system before powering on. No additional power supply unit is required. Allow adequate clearance around the paper feed slot and output area for receipt dispensing and media loading. If integrating into a networked POS environment, consult your POS software documentation for print queue configuration.