M2 1216 wireless network card to PCI-e

M2-1216 originally only had one layer of pins. In order to support CNVio, Intel added the inner ring pins. Generally, those using the PCI-e protocol use the outer ring pins, and the power pins and some other pins are required.
Only NGFF/M2 e-Key supports CVNio, and neither PCI-e nor MINIPCI-e supports CNVio.
Regular PCI-e does not contain Bluetooth pins using USB2.0, so additional pins are required to be Bluetooth compatible.
The antenna seat is IPX4, while the MINIPCI-e is IPX1 and requires the use of an adapter cable. Desktop users also need to pay attention when purchasing.
Intel recommends adding two groups of capacitors, each with 10u, 0.1, and 0.01uf capacitors. Seeing that other solutions have not added too many capacitors, it depends on your own needs. It is recommended that small capacitors be added, preferably all capacitors, but it may not be useful.
Desktop users can choose to use a baffle for linking. In order to maintain versatility, the second screw hole is opened into a long circular screw hole to be compatible with baffle antennas between 25-33mm (the distance between the two screw holes). You
can also purchase patch antennas. , attach it to a non-metallic location on the chassis or extend it, or use IPX4 to SMB, and then use an SMB rod antenna.
Due to problems such as PCIE trace crossovers, the components are arranged on the back, not upside down.
The USB 4Pin used by Bluetooth adopts 2PH spacing. Due to these solutions for designing PCI-e, my level is limited and I don’t have much experience in high-speed differential signal design. I welcome discussion and make it into a product.