Star Micronics mC-Connect Cash Drawer Adapter (39700000)

The Star Micronics mC-Connect Drawer (39700000) is a compact hardware adapter that allows you to control standard cash drawers directly from mobile devices, tablets, and desktop computers.

Traditionally, electronic cash drawers must plug into the back of a desktop receipt printer to receive an opening signal. The mC-Connect Drawer removes this dependency. It sits between your point-of-sale (POS) device and your cash drawer, converting wireless or wired data commands into a physical opening trigger.

Equipped with USB-C, Ethernet, Wireless LAN, and Bluetooth Low Energy (LE) 5.0, this single unit adapts to whatever network or device layout your business uses. It works with standard cash drawers that use an RJ-12 (DK) cable, allowing you to update your checkout layout without buying new till drawers.

Key Features

• Printer-Free Operation: Open cash drawers directly from your iPad, Android tablet, smartphone, or PC without needing a receipt printer connected to the desk.

• Four Connection Options in One Unit: Includes USB-C, wired Ethernet (LAN), 2.4GHz Wireless LAN, and Bluetooth Low Energy 5.0 interface options built directly into the device.

• Expandable Control: Features two dedicated RJ-12 (DK) ports. It can independently control two cash drawers out of the box, or up to four drawers using a dual-drawer splitter cable.

• Intelligent Power Management: Monitors drive voltage to ensure the electronic mechanism receives enough power to fire cleanly, preventing failed opens during busy service periods.

• Compact, Magnetic Housing: Measuring just 98 x 67 x 31 mm and weighing 105g, it includes built-in magnets for hidden mounting directly onto the metal casing of your existing cash drawer.

Technical Specifications

How It Works

The mC-Connect Drawer operates as an electronic translator between your digital sales platform and your physical cash drawer.

1. Physical Setup: You attach the mC-Connect unit to your cash drawer (using the built-in magnets). You then plug the cash drawer’s standard RJ-12 cable into one of the adapter’s ports.

2. Power Supply: The unit is powered via its USB-C port, drawing power from a mains plug adapter or a powered POS terminal.

3. Data Connection: You pair or link the adapter to your local network or tablet using Wi-Fi, Bluetooth, an Ethernet cable, or a direct USB-C link.

4. The Trigger: When a operator completes a cash transaction on the POS software, the app sends an opening command over the network. The mC-Connect receives this data packet, verifies the voltage is sufficient, and instantly sends an electrical pulse down the RJ-12 cable to fire the drawer's latch.

Common Applications in the UK

• Mobile and Tableside Ordering (Hospitality): Ideal for UK pubs, bars, and restaurants where staff take orders on tablets. Staff can open a central cash till directly from their handheld ordering device without walking back to a fixed terminal or printing an unnecessary receipt.

• Pop-up Retail and Market Stalls: Excellent for temporary events, food festivals, and pop-up shops across the UK where trade relies on 4G/5G mobile routers or tablet checkouts, bypassing the need for heavy, mains-dependent desktop printers.

• Space-Saving Counters & Kiosks: Suited for boutique shops, coffee stands, or self-service kiosks with limited counter space. By removing the receipt printer from the checkout chain, retailers can keep counters completely clear.

• Shared Till Environments: Multi-lane environments or retail counters where multiple staff members sharing a single till drawer need to fire the latch from separate, mobile devices.

Frequently Asked Questions (FAQs)

Does this adapter work with non-Star Micronics cash drawers?

Yes. The mC-Connect Drawer is compatible with any standard electronic cash drawer that uses an RJ-12 (DK) connection interface, regardless of the brand.

Do I need a receipt printer to make this work?

No. The primary purpose of the 39700000 adapter is to let you deploy and trigger cash drawers independently, completely removing the requirement for a physical receipt printer at the checkout station.

Is a power supply included in the box?

The box includes the mC-Connect unit and a USB cable. It is powered via USB-C (5V, 0.5A). To run wireless connections like Wi-Fi or Bluetooth, you will need to plug this cable into a standard USB mains power adapter or a powered USB port on your POS terminal.

Can I control more than one cash drawer with this device?

Yes. The device has two physical RJ-12 ports to control two drawers out of the box. By using a Star Dual Drawer Secure Splitter Cable (part number DK-S12YE12Y-DDSC-72), you can expand the system to control up to four cash drawers from this single unit.

Which operating systems are supported?

The adapter works across major operating systems. It is supported by Android, iOS (iPad/iPhone), Windows, and web-based cloud POS platforms using the StarXpand SDK or Star Quick Setup apps. Please verify that your specific POS software provider supports the Star mC-Connect driver before purchasing.