GTrusted
The Marsboy 2 USB 3.0 Type-C Charging Hub does not properly support USB Power Delivery, making pass-through charging not work correctly when used with the dodocool 30W USB Type-C PD Charger and Apple MacBook (Early 2016).
Using software from Granite River Labs, first we look at the USB Power Delivery negotiation between the Marsboy 2 USB 3.0 Type-C Charging Hub and the dodocool 30W USB Type-C PD Charger. It's a pretty short conversation with no power contract successfully established.
We can also see that the dodocool 30W USB Type-C PD Charger is providing a minimal 5 volts @ .5 amps to power the Marsboy 2 USB 3.0 Type-C Charging Hub.
If we then look at the USB Power Delivery protocol traffic between the Marsboy 2 USB 3.0 Type-C Charging Hub and Apple MacBook (Early 2016), again we don't see any proper negotiation happening.
Without any successful USB Power Delivery power contract established, the Marsboy 2 USB 3.0 Type-C Charging Hub is unable to pass-through charging from the dodocool 30W USB Type-C PD Charger to the Apple MacBook (Early 2016).
