All looks fine. Came without SD card so you need to buy one to put on RepRap files to be able to connect via ip to the bord. Did not try it on printer, on table without anything connected the board is working.
Shipping was very slow and the product was just packed in an antistatic bag and put without any protection in the packaging along with 500 mm heavy Lead Screws... I also received another Duet from another seller and it has way more accessories provided such as heatsinks for drivers, external plugs (so you can make your own custom wiring), heatshrink, cables... and for a cheaper price ! The only better thing here is that the motherboard is black instead of blue. A little disapointed with this order.