Can a new USB C dock like this for example: USB C dock with Power Delivery be connected and work with an old Macbook (or other USB A gen 2.0 or 3.0 computer) using an adapter like in the picture for example?
If so: Can I then connect a power adapter, e.g. "Apple 61w usb-c power adapter" or a regular smartphone USB C power adapter to the PD port on the USB C dock to deliver power to the dock so as the dock now becomes a powered usb hub? (I know it'll not charge the old Mac though. A powered dock/hub is required for more power-hungry devices like several external HDD.)
[I'm concerned that the new dock may damage the old USB A port, especially when the power adapter is connected to the PD port so as the dock tries to send power to the old USB A. For new USB C it detects when the port "wants" to get power and it'll also power the devices connected to the dock along with the computer. The intention with the old Macbook is to power only the dock and the connected peripherals]