M.2 WIFI (A+E Key) to M.2 NVMe adapter board

I. Image Display

Images are shown below.
Figure 1: Front of the adapter module (with Optane 16G hard drive inserted)
Figure 2: Front of the adapter module
Figure 3: Back of the adapter module
Figure 4: Installation Image 1
Figure 5: Installation Image 2

II. Functional Verification

Verification Platform:
CPU: QTJ2
Motherboard: GA-Z170N-WIFI REV1.0
Hard Drive: Intel Optane 16G
Verification images are shown below (correctly recognized in BIOS, subsequent verification shows entry into the PVE system):
Figure 6: Verification Image

III. Replica Notes

Prototype Parameters: Board thickness 0.8mm, double-sided line spacing ≤6mil (differential impedance 100Ω),
speed PCI-E 3.0 x1 (depending on the motherboard, 4.0 impedance is also too high), not suitable for high-speed hard drives, Optane is okay for playing around with.
Please ensure there will be no interference on your motherboard before prototyping.