USB-C cabling

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A while back I acquired a NVMe caddy but did not get to use it. I now did as I got an NVMe disk.

The caddy is
	https://www.aliexpress.com/item/1005001346524009.html
        	Color: 10Gbps M2PV C3
The disk is
	1TB WD Blue SN580 NVMe WDS100T3B0E (PCie v4)

I expected to see 1GB/s speed.

Read [X=Y] cable from USB-X to USB-Y. Caddy on left, machine on right.

1) Directly connecting the caddy to the machine (caddy-[C=C]-socket) I see 36MB/s. So USB-2? speed.
2) Using a caddy-[C=USB3M]-socket I get 442 MB/s. So USB-3.0 speed. This is expected.
3) The kicker: caddy-[C=USB3M] then [FUSB3=C]-socket (two cables) I get the expected 1000MB/s.

I tried a few C=C , no change. Two different machines. same.

What I want, of course, is good speed with a straight C=C cable.

TIA

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Eyal at Home (fedora@xxxxxxxxxxxxxx)
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