Ther was no guide or instructions for swapping the motherboard out. The mechanical and electrical side where fine. After fitting it, i powered up the printer and got the startup sound but no display Ui on the front panel and the printer registered as a finder in flashforge rather than.an inventor 2. Eventually found a web link to an old firmware abd the instructions to make a bootable usb for the firmware. Once the firmware was replaced i was able to update to the latest firmware and the printer is working like s dream again. A guide would have saved a lot of fruitless googling and heartache. Also the packaging for such a delicate item was terrible.