After several attempts to buy this card, I finally got it. I installed it as per instructions. At first it worked, but was VERY slow when doing raster or vector engraving, And when connected to Lightburn, would output 20+ mA with a 25% setting in Lightburn. After a day of frustration with it, I removed the device from Lightburn to re install it. Lightburn would no longer recognise it, And after inputting it manually, All I got was waiting for connection. This card is a complete waste of money.