| From: Russell Reiter via talk <talk@gtalug.org> | On Wed, Sep 23, 2020 at 9:40 AM D. Hugh Redelmeier via talk <talk@gtalug.org> | wrote: | I've made some progress and then lost it again. I had to take a high def | photo of the writing on the cable to read that the cable is rated 3.0 and | my mb is only rated 3.0 but the peripheral card is usb 3.1. I think this is | why the mb connection hangs the system on usb 3.0, but the peripheral 3.1 | card does not. I'm not sure which iteration of usb provides "alternative" | bus capabilities, ie. video and up to 100w power. You don't care about video. We don't know if you need larger power for the disk. | The mb type-c 3.0 port reports overcurrent when the device is attached and | won't boot. Reports to who? How? What do *you* observe | On the adapter card the type is usb 3.1. and the device doesn't | hang the system when booting, When booting from what? From the NVMe card via USB C? | but it also won't enumerate the drive What do you mean "enumerate"? What do you meant by "it"? | > | > - reliably powering an NVMe drive, connected via USB C. | > What are its specified power requirements? You didn't answer this question. | > What can the ports provide? | > USB C is a mess: one connector, several standards and options | > within those standards, especially with respect to power. | > | | I may have to get a type-c 3.1 rated cable to go much further. It was all | working fine at one point before the power outage. I doubt that the cable is a problem. But I guess that there's a chance. | I am updating the kernel | regularly on Fedora 31 I think that that is a good idea but I think that it is unlikly to be the problem.