Upgrade 3PCS CMYK LED Backlight Board Kit FAZ007 for Bambu Lab Makerworld Accessories,Control Brightness USB Dimmer Switch, 120 LED Beads, 3D Printer Light Box 5V Type-c Powered

Here are the ones that I used - it's from the Makerworld site, but you can get them on Amazon (I got a box with three boards for $17 US) https://us.store.bambulab.com/products/bambu-cmyk-backlight-board?id=42235769979016 Amazon link is for the three pack: https://www.amazon.com/dp/B0FK1QFBMQ?th=1