I have a 6ft TB3 20gpbs cable, need 10 ft to connect two TB3 servers thru the dock. Will slower signal pass thru straight up USB-C cable?
Thanks for asking. Unfortunately no, Thunderbolt 3 devices likely won’t be detected at all, or possibly just won’t authenticate using a USB-C cable as the dock/host can identify if the cable is not a Thunderbolt 3 model. (This may vary slightly depending on the Windows host and Thunderbolt 3 driver version, but on Mac it definitely won’t work - and there will be an error popup message in the macOS notifications.)
For longer than 6ft, you might need to look into an active Thunderbolt 3 cable option. These are usually optical cables and aren’t affected by the distance like a copper based cable would be. These cables are usually “Thunderbolt 3 only” in that for USB-C devices, they’re limited to USB 2.0 speeds.
We haven’t tested a 10ft cable, but we’ve tested a 40Gbps 6ft active cable with good results. Unfortunately we don’t offer any active solutions at this time.
Please don’t hesitate to let us know of other questions!