USB-C to DisplayPort Adapter (USBC-DP) is not bi-directional?


#1

The “VESA DisplayPort Alt Mode for USB Type-C Standard Feature Summary” pdf document describes a USB-C to DisplayPort cable that is bi-directional.

The Amazon product page says the USBC-DP is not bi-directional. The Plugable product page is not as clear and only says that the USBC-DP supports DisplayPort displays.

There are some USB-C displays that a bi-directional cable might be useful for (those that don’t use USB-C for power, as DisplayPort only has 1.65W). Future Thunderbolt 3 Displays using a Titan Ridge controller will be able to receive DisplayPort input through their Thunderbolt 3 port.

So why did you choose to make a cable that is not bi-directional? What is the difference in hardware and price?

Moshi seems to have the only bi-directional USB-C to DisplayPort cable and it supports DisplayPort 1.4 and it’s twice as expensive (but I don’t know if that’s because of the DisplayPort 1.4 capability, or the bidirectional capability, or the VESA certification).


#2

Hi,

Thanks for reaching out to us!

Our USBC-DP cable and adapters are not bi-directional, the cable can take a USB-C or Thunderbolt 3 DisplayPort Alternate Mode source and output to a DisplayPort 1.2 destination, and will not work in reverse. While there are currently very few USB-C/Thunderbolt 3 monitors we do expect to see more using the new Titan Ridge chipset you mentioned and are looking into adding a DisplayPort to Type-C cable or reversible cable to our product line, however we have not yet found a solution that is entirely satisfactory.

When we find a solution that we believe will work for all USB-C displays and DisplayPort source it will receive a full blog post on our website!

Please let me know if you have any additional questions.

Pat
Plugable Technologies
www.plugable.com/support


#3

Hello,

We’re closing this thread due to inactivity, but if you have any further questions please feel free to contact support@plugable.com and we’ll be happy to help.

Thanks,

Pat
Plugable Technologies
www.plugable.com/support


#4