Milk-V Offers a Trio of RISC-V boards, from Pi-sized to micro-ATX
tomshardware.com
tomshardware.com
https://hackaday.com/2023/03/06/the-future-of-risc-v-and-the...
https://www.hackster.io/news/pine64-shows-off-the-first-star...
They took a little longer to ship than expected late last year, but I've got one of each.
The VisionFive 2 has an M.2 socket, the Star64 has a PCIe slot. Only 1 lane in each case, but you can approach 400 MB/s on either.