If you download the DK Riser model from Makerworld.com for Bambu Labs X1, X1 Carbon, P1S or P1P, it offers you the option to install an LED light strip inside the printer to brighten it up for better visibility. There are a number of USB powered LED strips available, but there's no USB ports on the Bambu printer platform. This is where the B.U.M.P. MARK II or Bambu USB Magnetic Power-Unit comes in very handy. It uses the same 6 pin connector on the back of the printer and the AMS to provide USB power without the need to run a separate cord to a wall outlet. The unit comes with two cord clips that will hold a standard 3.5mm cord off the side of the DK Riser, which has a 2mm lip. I use this on my printer and it works perfectly. The MARK II has a 3X longer cord at 27" long, Art Deco corner grips and internal gap inserts to take up space that it required for assembly of the unit.