M.2 ssd is not recognized

[aaditya]

Ok. For some users /dev/nvme* entries dont appear, as witnessed here:

M.2 NVMe Intel 1TB 660P Not reconized on Ubuntu Server

Here is a link to the item purchased: No /dev/nvme* device is created when booted. I tried directly connected to the board and also through the riser device. While looking at dmesg I see these errors: [ 3.875231] rockchip-pcie f8000000.pcie: PCIe link training gen1 timeout! [ 3.890425] rockchip-pcie: probe of f8000000.pcie failed with error -110 Any insight into why this m.2 nvme SSD wouldn’t be visible would be helpful. Thanks, digi