M.2 wireless network adapter card

This is an M.2 wireless network card adapter card, which converts the M.2 E-key wireless network card on the laptop into a standard PCIe card
(the following are the author's random thoughts, you can scroll down if you don't like to read).
         I gave it to you some time ago My Savior R7000P upgraded the network card. The original network card was MediaTek's MT7921, which was sometimes unstable. After replacing it with AX210, it became much more stable. Since then, the original network card has been gathering dust in the corner. It just so happened that my desktop was missing a wireless network card. Based on the principle of reusing old things, I drew an adapter card and learned how to draw a PCIe board.
       There are two types of M.2 network cards, one is A+E key and the other is E-key. The former is based on the PCIe protocol, with the WiFi part using PCIe 3.0 x1 and Bluetooth using USB; the latter is Intel's unique CNVio protocol and can only be used on motherboards with specific Intel chipsets.
       As shown in the picture, the AX200 on the left has A+E key and can be used on any platform; the AX201 on the right has only one E key, Intel CNVio protocol, and its use is limited. This article only discusses A+E key. Wireless network card, I won’t go into details about the other one.
       The M.2 wireless network card mainly communicates with the host through the PCIe bus, including PCIe data differential pair (a pair of transceivers is one lane), 100MHz differential clock (REFCLK), PCIe reset signal (RESET#), PCIe wake-up signal (WAKE#) and Clock request signal (CLKREQ#). In order to use the Bluetooth function of the module, it is also necessary to lead out the USB data differential pair (D+ D-). Through these, you can use all the functions of the M.2 wireless network card.
       In order to convert the M.2 specification network card to standard PCIe, you must also know the pinout definition of the NGFF A+E key slot. The following picture is the pinout diagram of the NGFF A+E key slot: the useful signals are PCIe and USB are connected, you only need to lead out the PCIe and USB signals from the NGFF slot.
        The mechanical dimensions of the PCIe board refer to the work of oldmonster. The board is compatible with full-height bezels and half-height bezels, and can also be used in small chassis.
        The M.2 network card requires 3.3V power supply, so it takes power directly from the 3.3V pin of the PCIe slot. (In fact, the general board draws power from the 12V pin of the PCIe slot. Since the power consumption of the wireless network card is very low, it is OK to draw power from the 3.3V pin).
        Below is the schematic diagram and PCB of the adapter card. Please point out any unreasonable parts, thank you~