Ok sorry its been a busy day but here are the things I ordered and all work:
This one adds two ports, uses the M keyed slot, top right. I do not recommend this one because there is no way to mount the ports. You'll have to zip tie it like I did. Very sloppy.
This one is what I'd recommend, it will take full use of that 1xPCIe 3.0 lane and fits the A+E slot. The RJ45 will screw nicely into the back of the chassis. FYI this is not EXACTLY what I bought but looks pretty much the same. If you want to use this with pfsense you might consider an Intel based chipset but i used Realtek fine on my setup.
Godspeed!

czardestructo
I'm in a rush but ive put Ethernet cards in both slots of my optiplex 3080 m.2 slots. The top right slot is vanilla and 4xpcie lanes,full speed. The bottom left is A+e keying and only 1x lane which is enough for 2.5gig Ethernet. This is ultimately what i used. For my prfesene box I added a second card, a 2 port Ethernet card to the top right m.2 slot and made it a four port beast.
Well I read the entire website. Extremely well done and interesting.
Audible noise or pollution from the engines and tire/brake dust?
On the flip side i worry everyday folks, who aren't the real problem, shame themselves everyday for living just because they're self aware, when the actuall problem makers are oblivious to their own behaviors and won't change.
I don't think people going on holiday are the problem. Its the power users, a small percent that just fly too much like its taking the train. I have a rich family member that has three houses around the US and they split their time between them all. Often flying 3 times a month, perpetually. Its a horrific and wasteful lifestyle.
I watched this without sound and knew exactly what it was.
Correct on the practice. Ive spent way too much time looking like a dolt under my tree trying a bean bag toss, sling shots, etc. All of the methods require a lot of technique and patience. I consider myself pretty tenacious so ive wasted 10s of hours on this project and I regretted it.
In the end I did end up using a drone, I got extremely lucky and used a fishing reel attatched to a rod I hammered into the ground. Soon as I got it over the branch it for jammed up with fishing line as I assumed and I reached down and closed the reel bell. Then I slowly lowered it down to earth.
I got lucky that the weight of the drone was enough and the fishing line didn't snag.
I have wasted a lot of time on this topic.
Drones are a crap shoot, the higher you get the more the weight of the fishing line drag and cross wind will mess with you. Flying through the branches then, more importantly, flying DOWN is impossible without the fishing line getting caught in the rotors. If you use a drone consider it a consumable.
Ive tried aggressive sling shots but its a ratio of the weight of what youre shooting relative to the drag of fishing line. Use too much weight then it won't fly high. Use too little and then you dont have enough to pull your line down the other side of the branch back down to earth.
Ive considered using a crossbow but lost interest.
I am that autonomous vehicle that always heavily dampens the stop and start flow. Ive been doing this for decades, its not hard just look ahead at traffic and stop being fixated on the vehicle directly in front of you.

I have fond childhood memories of sleeping under a sheet on a cot outside in Greece on a small island my family is from. In the last 15 years someone brought mosquitoes to the island and its insufferable because no one understands their breeding habits and always leave water troughs and tanks open for breeding. Its really rough in the winter rainy season.