As it's really annoying, and I see some posts have 1000 views with few comments, I'm still looking for solutions, please feel free to lend in any suggestions even if you're unsure yourself.
I'll try this (masking or covering pins with some tape)https://community.intel.com/t5/Wireless/Intel-AC-7265-NGW-Lost-Bluetooth-functionality/m-p/689699
this page has detail on the connectorhttps://pinoutguide.com/HD/M.2_NGFF_connector_pinout.shtml
I note that the key ID of the card is E, but I can physically use a card with key ID M.
pins Provided interfaces
A 8â€“15 2Ã— PCIe Ã—1, USB 2.0, I2C and DP Ã—4
B 12â€“19 PCIe Ã—2, SATA, USB 2.0 and 3.0, audio, UIM, HSIC, SSIC, I2C and SMBus
C 16â€“23 Reserved for future use
E 24â€“31 2Ã— PCIe Ã—1, USB 2.0, I2C, SDIO, UART, PCM and CNVi
F 28â€“35 Future Memory Interface (FMI)
G 39â€“46 Reserved for custom use (unused in the M.2 specification)
H 43â€“50 Reserved for future use
M 59â€“66 PCIe Ã—4, SATA and SMBus