4 ms·
USB-C hubs are not permitted by the spec.
by garmaine 7y ago
USB-C hubs are not permitted by the spec.
- hvidgaard 7y agoBut why?
- garmaine 7y agoPower, most likely. You physically couldn’t connect 4-5 full powered devices to a hub. There is an expectation that any USB-C port will accept any power any compatible device.
- hvidgaard 7y agoSo instead of a reasonable failure mode and perhaps an error message on the host, we now have an additional USB connector we need to use...?
- Shorel 7y agoThen the hub requires an additional power connector that goes to the wall. It doesn't mean such a device would be impossible to make.
- cesarb 7y agoWhere in the spec is it written that USB-C hubs are not allowed? The USB-PD spec even has an example with a 3-port USB-C hub, showing how the power delivery negotiation with the downstream ports should work.
- unionpivo 7y agoI just bought new PC, I spend almost 300 EUR on Motherboard alone, just so I had 2 USB-c (one back one front) and 2 nvme slots. Does that mean I'll only ever be able to hook up 2 devices to my PC ? If that's the case this sucks. I just cheeked there seems to be lack of usbc pci cards, and the ones that exist only have single ports :(
- Eric_WVGG 7y agoHere's a 4-port card: https://amzn.to/2WuAt4x https://amzn.to/2WuAt4x
- ProZsolt 7y agoPlease don't spread false information. The specs clearly mentions hubs and how to implement them: https://www.usb.org/sites/default/files/USB%20Type-C%20Spec%20R2.0%20-%20August%202019.pdf https://www.usb.org/sites/default/files/USB%20Type-C%20Spec%...