Star TSP143III vs. TSP143IV: Understanding Connectivity, Part Codes, and POS Performance

The Star Micronics TSP100 series has long been the gold standard for thermal receipt printing in the UK.

Spanning the popular TSP100III and the next-generation TSP100IV series, offers the reliability and "out-of-the-box" setup that modern businesses demand.

In this guide, we’ll break down the technical specifications, explore how they benefit specific vertical markets, what each model is best for and answer the most common questions to help you decide which model fits your till point.

TSP143III vs TSP143IV - what's the difference? 

Before looking at connectivity, it helps to know which generation you are choosing:

• TSP143III: The established receipt printer in the Star Micronics world. Slightly larger, with specific single-interface models (e.g., just Bluetooth or just LAN). Currently, TSP143IV does not have lightning cable charging. If it's required, this is the option for you. 

• TSP143IV: The next generation of the TSP100 series. 20% smaller, with dual interfaces (USB & LAN) as standard on most models, and support for the newer StarXpand SDK and CloudPRNT.

Where do these models fit? 

1. The "U" (USB) Model

• Part Codes: TSP143IIIU

• The Tech: Features a unique USB Lightning "Data & Charge" port.

• Best Application: Tablet-based Retail. It allows you to plug an iPad directly into the printer using a standard Lightning cable. The printer sends data to the iPad while simultaneously charging it, eliminating the need for separate power bricks or unreliable Wi-Fi pairing.

2. The "BI" (Bluetooth) Model

• Part Codes: TSP143IIIBI

• The Tech: Uses MFi-certified Bluetooth for wireless connection.

• Best Application: Mobile POS (mPOS) / Pop-up Shops. Ideal if you are moving around a store with a tablet or if your counter is a "stand" where running an Ethernet cable is impossible. It is the go-to choice for Uber Eats and Deliveroo tablets in small takeaway shops.

3. The "LAN" (Ethernet) Model

• Part Codes: TSP143IIILAN

• The Tech: Plugs directly into your internet router or network switch via a physical cable.

• Best Application: Kitchens and Busy Restaurants. A wired connection is the most stable. In a hospitality environment where signal interference from microwaves or metal appliances can drop Bluetooth/Wi-Fi, the LAN model ensures every order ticket prints without fail.

4. The "W" (WLAN/Wi-Fi) Model

• Part Codes: TSP143IIIW

• The Tech: Connects wirelessly to your existing Wi-Fi network.

• Best Application: Cable-free Environments. Perfect for historical buildings or chic boutiques where you cannot drill holes for Ethernet cables but need the printer located further away from the till than a USB cable allows.

5. The "UE" & "X4" (Next-Gen Hybrid) Models

• Part Codes: TSP143IVUE and TSP143IV X4

• The Tech: These are "Dual Interface." The UE has both USB-C and LAN built-in. The X4 goes further, including USB, LAN, Wi-Fi, and Bluetooth in one unit.

• Best Application: Future-proofing & Cloud Ordering. Because they include AOA (Android Open Accessory), they can charge and communicate with Android tablets via USB. These models are essential for businesses using CloudPRNT for direct-from-web order printing (e.g., Shopify or WooCommerce online orders).

Technical Specifications: The Core Power

The TSP100 series is designed to be a "plug-and-play" solution. Below are the key specs for the most recent models:

Star Spotted in the Wild: Where do these printers end up?

Retail (Boutiques, Gift Shops, & Convenience Stores)

In retail, counter space is a premium. The Star TSP100IV is 20% smaller than its predecessor, allowing for a cleaner, more minimalist POS setup.

• The "De-curl" Function: No one likes receipts that roll up like a scroll. This feature ensures receipts come out flat, making them easier for customers to handle and file.

• futurePRNT Software: This allows retailers to add custom logos, discount vouchers, and QR codes to the bottom of receipts without needing to change their existing POS software.

Hospitality (Cafés, Bars, & Restaurants)

Speed is the priority here. A print speed of 250mm/s means your kitchen or bar staff aren't waiting around for order tickets during a Friday night rush.

• Uber Eats & Deliveroo Compatibility: The TSP143IIIBI Bluetooth model is a favourite for tablet-based ordering systems.

• Splash-Proof Design: With optional covers and a vertical mounting kit, these printers can withstand the humidity and occasional spills of a busy kitchen environment.

Omnichannel & Cloud Commerce

The newer TSP100IV introduces CloudPRNT technology. This is a game-changer for businesses that take orders online (Click & Collect). The printer communicates directly with the cloud server, printing the order automatically in-store without needing a local tablet or PC to "trigger" the print.

Common Questions & Answers (FAQs)

Q: Does the TSP100 series come with a UK power cable? A: Yes. Unlike many competitors, Star Micronics includes everything in the box: the printer, a UK 3-pin power cable, interface cables, a wall mount kit, and a paper guide for switching to 58mm rolls.

Q: Can I use the TSP100III with an iPad? A: Absolutely. For the most reliable connection, the TSP143IIIU features a "Data & Charge" Lightning port. This allows you to connect your iPad directly to the printer via a standard Lightning cable for both data transfer and charging simultaneously.

Q: What is the difference between the "III" and "IV" models? A: The TSP100IV is smaller, features more modern USB-C ports, and includes CloudPRNT as standard. The TSP100III remains a robust choice with more varied single-interface options like dedicated Bluetooth or Wi-Fi models.

Q: My printer is printing blank paper. What’s wrong? A: This is usually because the paper roll is inserted upside down. Thermal printers only print on one side of the paper. Ensure the "shiny" side of the thermal roll is facing the print head.

Need a quote for your business?

If you're looking to upgrade your current till system or are setting up a new shop, these printers offer a 4-year warranty as standard, providing the ultimate peace of mind.