SKU: 64668324190

LightBurn Compatible Motherboard Upgrade for Desktop 40W Laser Engraver Cutting Machine

Sale price$179.99 Regular price$199.99
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Description

LightBurn Compatible Motherboard Upgrade for Desktop 40W Laser Engraver Cutting MachineK40 BOARD UPGRADE Download The Manual K40 LIGHTBURN COMPATIBLE: This upgraded K40 motherboard makes LightBurn work with your K40 laser engraver. The 24V K40+ control board is packed with cutting edge features to bring new capabilities to your 40W laser engraving machine. COMPATIBLE LASER ENGRAVERS: This K40 motherboard upgrade is compatible with all OMTech 40W Desktop Laser Engraving Machines. For other laser brands or custom builds, you will need a

K40 BOARD UPGRADE

Download The Manual

  • K40 LIGHTBURN COMPATIBLE: This upgraded K40 motherboard makes LightBurn work with your K40 laser engraver. The 24V K40+ control board is packed with cutting-edge features to bring new capabilities to your 40W laser engraving machine.

  • COMPATIBLE LASER ENGRAVERS: This K40 motherboard upgrade is compatible with all OMTech 40W Desktop Laser Engraving Machines. For other laser brands or custom builds, you will need a type B USB cable to connect your control computer. Also check the specifications section below to ensure pin compatibility.
  • SUPERIOR FUNCTIONALITY: This circuit board's open source Smoothie firmware comes preinstalled and preflashed on its 512MB MicroSD card, able to work with your Windows, Linux, or MacOS edition of LightBurn to create breathtakingly intricate photorealistic grayscale images as quickly and easily as standard patterns.

  • WARRANTY: No need to worry! This 40W laser machine motherboard includes a 1-year parts warranty.

Upgrade Your K40 Laser Engraver

Get more out of your K40 40W laser engraving machine with OMTech Laser's LightBurn-compatible control board! 

Purpose-built for 20W, 30W, and 40W desktop laser engravers, this circuit board comes preflashed with open source Smoothie firmware and additional signal ports that work just as well with most CNC routers. The ports handle our machines' default stepper motors and axis limits while providing support for even stronger add-on motors and vent fans if needed.

Further, this 24V logic board has dedicated ports that direct your laser head along its X and Y axes while recognizing their limit switches. This K40 upgrade also enables autofocusing, U-axis spinning for rotary axes, additional connections for add-on stepper motors, a 5V power feed, and nine 5V input/output signaling ports to handle pressurized air assists, external venting fans, and other laser engraving accessories.

Most importantly, this customized smoothieboard will allow your K40 box to work with LightBurn laser software running on any current and common operating system—Windows, Linux, or MacOS—so you can do precision grayscale work with any K40 laser cutter.

Upgrade your DIY laser engraver with the OMTech K40+ motherboard today!

Specifications:

Model: K40+

CPU Type: 32-Bit ARM Cortex-M3

Dimensions: 3.8 x 2.8 x 0.5 in. (9.8x7.3x1.2 cm)

Voltage: 24V DC

Input/Output Signals: 5V DC

Max. Frequency: 120MHz

Included Firmware: Smoothieware

Supported Software: LightBurn

Operating Temperature: 14 to 104°F (-10 to 40°C)

Net Weight: 1.7 oz. (48 g)

Warranty: 1 Year

Package Includes:

1 x K40+ Laser Engraver & CNC Motherboard

1 x 512MB MicroSD Card

1 x Instruction Manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 64668324190

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Amazon Customer
Charlottesville, US
★★★★★ 5
Glad we got it! And will most definitely buy it for our future products!
Great experience! We always bought Asurion Protection on a lot of our electronics to be on the cautious side. We recently had one of those electronics give out on its 3rd year, and we luckily had purchased the Asurion Protection Plan. The claims process was easy, took less than 5 minutes. I packaged the electronic the following day and dropped it off with the shipping label they gave me. I received a full refund of my product within hours of having the returned item dropped off. I am glad we bought Asurion Protection for our other electronics, and will continue to buy it for our future products (not just electronics). Very pleased with how fast and reliable they were, and enjoying the comfort of knowing our products are protected.
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Reviewed in the United States on June 7, 2026
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Lola
Grantham, US
★★★★★ 5
Protection Paid Off...Super Quick
The protection plan was easy to obtain and even easier to submit a claim. It came in very handy, especially with a device that you know is important but are uncertain if it will endure "the test of time." Knowing I had the Asurion plan to begin with made me more confident to purchase the device. When the claim needed to be filed it was a breeze and the process from start to reimbursement was super quick. Was happy to get the full paid price back and used it to buy a replacement right away. It's a no-brainer, get it with any electronics...peace of mind so worth it!
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Reviewed in the United States on September 17, 2024
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Marj
Alexandria, US
★★★★★ 4
Printers are okay refurbished.
For refurbished it was good had since 2022 just started not being able to connect. Hp quite not compatible any more.
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Reviewed in the United States on September 26, 2025
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Lillian
Alexandria, US
★★★★★ 5
Refunded my purchase price
I purchased the "TESmart" 2 computer KVM Switch. I always get the added warranty these day for electronics and I am glad I did. It has now been 3 years and the unit has stopped working correctly. It would switch between computers but the mouse and keyboard stopped working for one of the computers. I'm not sure exactly which component stopped working because the keyboard and mouse worked fine for the other computer. I did plugged the mouse and keyboard directly to the computer in question and they worked fine. I believe the "push threw" stopped for my W11 computer, meanwhile, the W7 computer keeps trucking on. I say all that to say this, it's worth paying a few dollars more to get that little bit of extra security on the electronics these days. Unfortunately the prices have gone up on the KVM switches, at least the ones worth buying so I am in search of a new one now. ASURION was easy to work with. It wasn't that much of a hassle. The slight glitch I experienced was their automatic system didn't register my claim correctly. Only mistake I made was making the claim over a weekend. I would say if you make a claim do it during the normal business hours. I was able to chat with an agent during working hours and they were able to remedy the issue quickly. I did have to ship the KVM switch and its components to Asurion but they paid for shipping and once I was able to package and ship the unit back, Asurion refunded my purchase price completely with an Amazon Gift Card. So, all in all, it's all good!
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Reviewed in the United States on June 8, 2024
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John Byrd
San Leandro, US
★★★★★ 5
Asurion Rocks!
Fantastic response. They did a great job of processing the claim. Money well spent! Great service and great protection plan.
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Reviewed in the United States on July 30, 2025

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