OpenWrt One

The OpenWrt One is the Wireless LAN Router by OpenWrt.

One of its key features is the expandability in software (of course)
and hardware. The following expansion slots are available:

• M.2 2230/2242 NVMe PCIe 2 X1 (e.g. for SSDs)
• mikroBUS socket

https://one.openwrt.org/