I am thinking to buy NanoPi M4v2 but I have some questions. 1) NanoPi M4v2 support PCIe gen 2.0? Because RockPi 4 supports gen2 protocol and have same hardware. 2) NanoPi M4v2 support boot from SSD drive? 3) If not boot directly SSD can I use bootloader and kernel on an emmc then I move rootfs from ...