What are the exact M.2 PCIe specs on Orange Pi 6 Plus? PCIe Gen 4 x4 lanes? Viable for low-end GPU via NVMe adapter?

[lucass]

Hi all, digging into the Orange Pi 6 Plus specs for a potential build. Can anyone confirm the M.2 slots (the two Key-M 2280 ones) are PCIe Gen 4 with x4 lanes each? Official docs mention NVMe support but are light on details.

I'm curious if this could handle a low-end GPU like an RX 570 (or even lower) through an NVMe-to-PCIe adapter/riser—thinking for light gaming or compute tasks. Has anyone tried eGPU setups on this board or similar ARM SBCs? What about power delivery, drivers, and performance? Running Linux (Ubuntu/Debian probably). Thanks for any insights or benchmarks!