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    ScottP got a reaction from TRS-80 in Orange Pi 4 PCIe Link Speed?   
    I have a NanoPC T4 (RK3399) with Friendly ARM ubuntu distro NOT Armbian as yet - I plan to migrate hence why I am reading these forums
    If this provides a data point?
    scott@hass:~$ sudo lspci -vv | grep -E 'PCI bridge|LnkCap' 00:00.0 PCI bridge: Fuzhou Rockchip Electronics Co., Ltd Device 0100 (prog-if 00 [Normal decode])         LnkCap:    Port #0, Speed 5GT/s, Width x4, ASPM L1, Exit Latency L0s <256ns, L1 <8us         LnkCap:    Port #0, Speed 8GT/s, Width x4, ASPM L1, Exit Latency L0s unlimited, L1 <64us scott@hass:~$ sudo hdparm -t /dev/nvme0n1p2 /dev/nvme0n1p2:  Timing buffered disk reads: 1784 MB in  3.00 seconds = 594.26 MB/sec