If USB port or Card Reader cannot be read then replacing the USB Port may be the solution, this part may also be used to repair issues with headphone socket or Card Reader for NUC 9 Quartz Canyon Barebone Mini Desktop PC series. The Daughter Board uses an USB integrated flex cable to connect to the motherboard, Ensure to connect IO side of the I/O-board cable to the daughter board to the system board. Compatible Part Number(s): NPG-151, 0101H3J03-535-H, 15C0077-4, G250C125N1 NOT FIT for NUC9V7QNB, NUC9i7QNB, NUC9i5QNB, NUC9i9QNB series. Reference list of compatible with models: - NUC9V7 series: NUC9V7QNX, NUC9V7QNX1, NUC9V7QNX2 - NUC9i7 series: NUC9i7QNX - NUC9i5 series: NUC9i5QNX - NUC9i9 series: NUC9i9QNX What's in the box: 1x USB Port Audio I/O Daughter Board (REV A) 1x USB connector Flex cable