If you're into 3D printing and running a BIGTREETECH SKR 3 or SKR 3 EZ motherboard, this DC mode expansion module is a really smart addition to your setup. Basically, it gives you proper voltage control for your CNC fans - you can easily select between 24V, 12V, or 5V power without needing messy external transformers. The installation is pretty straightforward - you just plug it into the 2x4 pin female header on your mainboard. There are jumper caps that let you choose your power source - if you want to use DCIN, you short the VIN pins, or for 12V/5V, you short the VOT pins. What's really valuable is how this protects your mainboard from potential damage that can happen when you're messing with external power supplies for your fans. Better heat dissipation means your printer runs more reliably, especially during those long prints. The build quality is typical BIGTREETECH - solid and well-designed. It's one of those accessories that seems small but can make a real difference in your printer's performance and longevity. If you've been dealing with fan noise issues or want more control over your cooling setup, this module gives you that flexibility. The BIQU customer service team is pretty responsive too if you run into any installation questions. For serious 3D printing enthusiasts who want to optimize their setup, this is definitely worth considering to get your fan control dialed in perfectly.
Free 30-day returns 
Free 30-day returns
