The Stone is sold by Henge Docks targeting Apple Mac's so let's find out how well the 13" MacBook Pro (2017) gets charged from a non USB Power Delivery capable USB Type-C port on the Stone dock.
After connecting the Stone's rear USB Type-C port to the 13" MacBook Pro (2017), we observed the Mac on a fully depleted battery pulled up to mostly 7.5 watts to charge with the Stone. Note the USB Type-C port at the back of the Stone does not support USB Power Delivery which can provide up to 10.5 watts to charge downstream devices like a phone.
Click here to download the trace captured by the GRL-A1 power analyzer to see more details on how the Stone charges the 13" MacBook Pro (2017) at 0% battery charge.
Download the A1 software from Granite River Labs here to view the trace.