I have a few of these in my 7th Gen Intel Z270 chipset machine.

Bejavr M.2 PCIe NVMe X1 Adapter... https://www.amazon.com/dp/B0CCLHQV43?ref=ppx_pop_mob_ap_share

There's not much to the adapters, there are vertical versions like this one too, and adapters with more lanes.

JSER NGFF M-Key NVME AHCI SSD to... https://www.amazon.com/dp/B07HRLBVXB?ref=ppx_pop_mob_ap_share

I'm not sure if they're faster than SATA3 on my machine given it's an x1 connection but I prefer it to having enclosures hanging off USB.

I also have this to make use of the x1 slot blocked by my GPU.

XRIKUI Dual 90Degree Right Angle... https://www.amazon.com/dp/B0CBPKZ15N?ref=ppx_pop_mob_ap_share