trionux: Thank you very much for joining the Intel® Compute Stick communities. We will do our best in order to provide the information you are looking for.
The thing about the USB-C port on the stick is that what is does is to provide power to the stick, if you connect that device on it, there will be no power source and the stick will not work.
If you need to add more USB ports, then we recommend to use a USB hub, on the link below you will find the list of tested peripherals for the stick where you will see some models listed:
Any further questions, please let me know.
Sorry about my pool English.
USB-PD is a new protocol so that type C port can charge and discharge at the same time.
The picture above is a hub that has a type A(USB 3.0) and a type c(power source).
I know there are some USB3.0 hubs can plug on the stick's type A port，but if the stick support USB-PD，I want to buy this one.
trionux: No problem at all. In regard to your inquiry, the Intel® compute stick does not support the USB-PD protocol, that is why unfortunately the device will not work with the stick, in order to confirm that information please verify the link below:
Any questions, please let me know.