Low profile bracket for 2 x 2.5GbE Intel I226-V M.2 NICs

I'm making my own router to run OPNsense on and decided to use an HP 800 G4 SFF which in my opinion offers great expandability for its size. It has 4 PCIe 3.0 ports, two of them being x1. I needed two 2.5GbE ports for the WAN and only had one of those PCIe 3.0 x1 ports available and, even though those cards seem to exist (2x2.5GbE PCIe 3.0 x1 NIC) and this was for a failover scenario, I didn't feel comfortable as the bandwidth just wasn't there. At first I tried using one of the 2.5GbE NIC that connects to the M.2 A/E Key slot (where a WiFi/Bluetooth card usually goes) and a standard 2.5GbE PCIe x1 NIC, but it wouldn't fit due to the tight clearances and the thickness of both PCBs, so I ended up going with 2 of the 2.5GbE NICs that connect to M.2 ports: one connected to the A/E Key slot, and the other one connected to one of the B/M slots (where NVMe drives usually go). This way I'm sure I have enough bandwidth for both and can use decent chipsets (Intel I226-V in this case).

I added some "stoppers" and modified the notch to perfectly fit the HP 800 G4 SFF, but I also include the OpenSCAD file so that you can make the necessary edits for your machine. I did this to be able to properly secure both ports as without that, it wasn't all that secure (consider that nothing is actually connected to the PCIe port which is what usually secures the card and thus the ports, the most).

An improvement would be adapting this bracket to those PCIe 3.0 x1 to NVMe cards, freeing one of the NVMe ports enabling a more secure fit and the possibility of mirroring the NVMe drives.