Citizen CT-S310II-U-BK USB/Serial Receipt Printer
Citizen CT-S310II-U-BK USB/Serial Receipt Printer
Compatible with:
CT-S310II-U-BK
Couldn't load pickup availability
Free Shipping Over $500
Fully Secure Checkout
Product Description
The Citizen CT-S310II-U-BK thermal receipt printer is a compact 80mm POS receipt printer for retail stores, restaurants, cafés, wireless retail stores, service counters, and small business checkout environments that need dependable everyday receipt printing. This black Citizen CT-S310II configuration is designed for standard 3 1/8" thermal receipt paper, direct thermal printing, and practical POS counter use where reliability, space savings, and low operating costs matter.
This listing is for the Citizen CT-S310II-U-BK USB/Serial receipt printer in black. It is a good fit when your POS setup requires a USB or serial-connected thermal receipt printer. It is not the Ethernet, Bluetooth, Wi-Fi, white, or higher-speed CT-S801III version. Confirm the exact interface your POS system requires before ordering.
Quick Answer
The Citizen CT-S310II-U-BK is a black USB/Serial 80mm thermal receipt printer for compatible retail, restaurant, café, wireless store, service counter, and small business POS checkout setups. It prints standard 3 1/8" receipts using direct thermal technology, so no ink or toner is required. It is best for small to mid-volume environments that need reliable receipt printing without moving to a premium high-speed receipt printer.
Compatibility depends on your POS software, operating system, connection type, drivers, accessories, and configuration. Confirm compatibility before ordering.
Best For
- Retail store checkout counters
- Wireless retail stores and service counters
- Restaurants, cafés, bakeries, and quick-service counters
- Small business POS systems
- Front-of-house receipt printing
- USB or serial POS receipt printer setups
- Businesses that need a dependable 80mm thermal receipt printer
Important Model Clarification
This product page is for the Citizen CT-S310II-U-BK USB/Serial thermal receipt printer, black. Receipt printer interface matters. Do not assume this listing is the Ethernet, Bluetooth, Wi-Fi, white, or alternate CT-S310II configuration.
| Detail | This Listing |
|---|---|
| Brand | Citizen |
| Model | CT-S310II-U-BK |
| Printer Type | Thermal POS receipt printer |
| Receipt Width | 80mm / 3 1/8" |
| Print Method | Direct thermal |
| Connectivity | USB / Serial configuration |
| Color | Black |
| Best Fit | Small to mid-volume POS receipt printing |
Complete Your Receipt Printer Setup
This printer requires compatible 3 1/8" / 80mm thermal receipt paper. For a complete checkout station, pair it with compatible receipt paper, a cash drawer, a barcode scanner, and related POS hardware.
This Citizen receipt printer requires 3 1/8" / 80mm thermal receipt paper to operate. Make sure you have compatible rolls ready before installation.
Shop 3 1/8" x 230' Thermal Receipt Paper, 50 RollsKey Features
- 80mm receipt printing: Prints standard 3 1/8" thermal receipts for common POS checkout workflows.
- USB/Serial configuration: This CT-S310II-U-BK model is listed for USB/Serial POS connections.
- Direct thermal printing: No ink or toner required, helping reduce long-term supply costs.
- Compact black cabinet: Fits retail counters, restaurant stations, café counters, wireless stores, and service desks.
- Reliable receipt output: Built for consistent everyday receipt printing in small to mid-volume environments.
- Auto-cutter support: Helps create clean receipts and smoother checkout handling.
- Energy-conscious design: A practical receipt printer option for businesses focused on everyday operating costs.
- POS hardware workflow fit: Pair with compatible cash drawers, barcode scanners, receipt paper, and POS software.
Why Businesses Choose the Citizen CT-S310II
The Citizen CT-S310II receipt printer is a practical option for businesses that need reliable receipt printing without unnecessary complexity. It is especially useful for stores and service counters that want a dependable USB receipt printer, serial receipt printer, or 80mm POS receipt printer for everyday checkout.
- Strong value for standard POS receipt printing
- Good fit for small to mid-volume checkout environments
- Uses widely available 3 1/8" / 80mm receipt paper
- Helps reduce ink and toner expenses through direct thermal printing
- Compact design works well on crowded counters
- Useful for retail, restaurant, café, wireless store, and service counter setups
Where This Receipt Printer Fits
| Business Type | How the CT-S310II-U-BK Fits |
|---|---|
| Retail stores | Print customer receipts at checkout counters, sales stations, and service desks. |
| Wireless retail stores | Supports wireless store and service counter receipt workflows when the USB/Serial configuration matches the POS setup. |
| Restaurants and cafés | Works as a front-of-house receipt printer for compatible restaurant POS systems. |
| Small business checkout | Provides practical 80mm receipt printing without stepping up to a premium high-volume printer. |
| Service counters | Fits compact workstations where dependable receipt printing and counter space matter. |
Citizen CT-S310II vs CT-S801III
The Citizen CT-S310II is a practical everyday receipt printer for small to mid-volume environments. If you need a faster or more advanced printer for heavier checkout volume, compare it with the Citizen CT-S801III receipt printer.
| Question | Choose Citizen CT-S310II-U-BK | Consider Citizen CT-S801III |
|---|---|---|
| Checkout volume | Best for small to mid-volume POS receipt printing. | Better for heavier-volume or faster checkout environments. |
| Buyer intent | Standard retail, café, wireless store, restaurant, or service counter receipt printing. | Higher-performance retail, restaurant, hospitality, and demanding checkout setups. |
| Interface needs | Use this listing when the USB/Serial black CT-S310II-U-BK configuration is required. | Choose the correct CT-S801III configuration based on interface and POS software requirements. |
| Next step | Confirm this exact CT-S310II model matches your POS system. | View the Citizen CT-S801III. |
Need help comparing models? Read Citizen CT-S310II vs CT-S801III.
USB/Serial vs Ethernet, Bluetooth, and Wi-Fi Receipt Printers
Receipt printer connectivity should match your POS software, hardware, and checkout layout. This product is the USB/Serial CT-S310II-U-BK configuration. If your POS system requires Ethernet, Bluetooth, or Wi-Fi, confirm the correct printer model before ordering.
| Connection Type | Common Fit | What to Confirm |
|---|---|---|
| USB | Direct connection to a compatible POS terminal, computer, or supported host device. | Confirm POS software, operating system, drivers, and USB support. |
| Serial | Legacy POS systems and some specialized checkout environments. | Confirm serial cable, port requirements, POS software, and configuration settings. |
| Ethernet | Networked receipt printer setups. | This listing is not the Ethernet configuration. |
| Bluetooth or Wi-Fi | Wireless or tablet-based POS setups where supported. | This listing is not the Bluetooth or Wi-Fi configuration. |
For more help choosing the right connection type, read Ethernet vs Bluetooth vs USB receipt printers or contact Spartan POS before ordering.
Receipt Paper Compatibility
The Citizen CT-S310II uses standard 3 1/8" / 80mm thermal receipt paper. Receipt paper size matters because the wrong paper width or roll size may not fit correctly or may cause printing and feeding issues.
- Use compatible 80mm / 3 1/8" thermal receipt paper
- Do not use bond paper or ink ribbons with this direct thermal printer
- Confirm roll diameter and paper specifications before ordering supplies
- Keep extra rolls on hand for uninterrupted checkout operation
Shop receipt paper, compare receipt paper sizes, or read 80mm vs 58mm receipt paper for help choosing the right roll size.
What You May Need With This Printer
- Thermal receipt paper for everyday POS receipt printing
- 3 1/8" x 230' thermal receipt paper, 50-roll pack
- Cash drawers for compatible cash management workflows
- Barcode scanners for retail item scanning and checkout
- 2D barcode scanners for QR codes, loyalty cards, and screen scanning workflows
- POS hardware for complete checkout stations
- Receipt printers if you need to compare other models, brands, or connection types
Common Search Aliases
- Citizen CT-S310II receipt printer
- Citizen CT-S310II thermal receipt printer
- Citizen CT-S310II-U-BK receipt printer
- Citizen USB receipt printer
- Citizen serial receipt printer
- 80mm Citizen thermal receipt printer
- 3 1/8" POS receipt printer
- Citizen POS receipt printer for retail
- Receipt printer for wireless retail stores
- Small business thermal receipt printer
Common Mistakes to Avoid
- Ordering the wrong interface: This listing is for the CT-S310II-U-BK USB/Serial configuration, not Ethernet, Bluetooth, or Wi-Fi.
- Assuming compatibility from the model name alone: Confirm your POS software, operating system, drivers, and connection requirements.
- Forgetting receipt paper: This printer requires compatible 3 1/8" / 80mm thermal receipt paper.
- Using the wrong paper type: This is a direct thermal printer and does not use ink, toner, bond paper, or ribbons.
- Buying for heavy-volume use without comparing upgrades: For heavier checkout environments, compare the Citizen CT-S801III.
- Forgetting cash drawer requirements: If the printer needs to trigger a cash drawer, confirm the printer, drawer, cable, and POS software configuration.
Related Citizen and Receipt Printer Resources
- Browse Citizen POS printers
- Citizen CT-S310II vs CT-S801III
- Receipt printers
- Receipt paper
- Receipt paper size guide
- 80mm vs 58mm receipt paper
- Ethernet vs Bluetooth vs USB receipt printers
- POS hardware compatibility guide
- Contact a POS hardware expert
Why Buy from Spartan POS?
Spartan POS supplies receipt printers, receipt paper, cash drawers, barcode scanners, POS hardware, and related checkout technology for real business workflows. We support the products we sell and can help you confirm whether this Citizen CT-S310II configuration is the right fit for your POS software, connection type, receipt paper, cash drawer, and checkout setup.
Need help before ordering? Visit contact a POS hardware expert, review the POS hardware compatibility guide, or learn more about why trust Spartan POS.
Healthcare Printing Applications
The CT-S310II can support healthcare receipt, ticket, queue, and front-desk printing workflows when paired with compatible software, paper, drivers, and connection options. Citizen positions receipt printers for healthcare areas such as admissions, queue management, paperwork identification, cafeteria and other service areas, pharmacy receipt printing, and private practice office workflows.
- Clinic, hospital, and private-practice front-desk receipts
- Queue management and patient-service tickets
- Pharmacy checkout, prescription pickup, and customer receipt printing
- Cafeteria, gift shop, and healthcare retail transaction printing
- Self-service terminal receipts and administrative documentation
See related healthcare receipt printers and the full guide to Citizen healthcare printing solutions.
Compatibility depends on your POS software, operating system, connection type, drivers, accessories, and configuration. Confirm compatibility before ordering.
Frequently Asked Questions
What model is this Citizen CT-S310II listing?
This listing is for the Citizen CT-S310II-U-BK USB/Serial thermal receipt printer in black. Confirm this exact configuration before ordering.
Is the Citizen CT-S310II a USB receipt printer?
This listing is for the CT-S310II-U-BK USB/Serial configuration. Confirm your POS software, operating system, drivers, and connection requirements before ordering.
Is this the Ethernet, Bluetooth, or Wi-Fi version?
No. This listing is for the USB/Serial configuration. If your POS setup requires Ethernet, Bluetooth, or Wi-Fi, confirm the correct model before ordering.
What size receipt paper does this printer use?
The Citizen CT-S310II uses standard 3 1/8" / 80mm thermal receipt paper. You can pair it with 3 1/8" x 230' thermal receipt paper.
Does the CT-S310II require ink or toner?
No. The Citizen CT-S310II uses direct thermal printing, so it does not require ink, toner, or ribbons.
Is the CT-S310II good for restaurants and cafés?
Yes, it can be a good fit for compatible restaurant and café POS environments that need front-of-house receipt printing. Confirm the exact POS software and connection type before ordering.
Is this a good receipt printer for wireless retail stores?
It can be a good fit for wireless retail stores and service counters when the POS system supports this USB/Serial receipt printer configuration. Confirm software, connection, and driver requirements before ordering.
Is the CT-S310II good for high-volume checkout?
The CT-S310II is best for small to mid-volume environments. For heavier-volume checkout, compare the Citizen CT-S801III.
Can this printer open a cash drawer?
Many POS receipt printer setups can be configured with a compatible cash drawer, but compatibility depends on the printer, cash drawer, cable, POS software, and connection setup. Browse cash drawers or contact Spartan POS for help confirming fit.
Can Spartan POS help confirm compatibility?
Yes. Spartan POS supports the products it sells and can help review your POS software, operating system, connection type, receipt paper, cash drawer, barcode scanner, and checkout setup before ordering.
Bottom Line
The Citizen CT-S310II-U-BK USB/Serial thermal receipt printer is a reliable 80mm POS receipt printer for compatible small to mid-volume retail, restaurant, café, wireless store, service counter, and small business checkout environments. It uses standard 3 1/8" thermal receipt paper, prints without ink or toner, and fits compact counters where dependable everyday receipt printing matters.
Pair this printer with thermal receipt paper, cash drawers, and barcode scanners, compare more receipt printers, browse Citizen POS printers, or read Citizen CT-S310II vs CT-S801III for help choosing the right model.
