I bought this to consolidate charging of multiple devices - USB headphones, iPhone X, Galaxy S8, iPad Pro 10.5". I especially wanted to fast charge my iPad Pro 10.5" through the USB C port as standard 12W charging is quite slow.
The 2.4A ports all work great and charge my iPhone, S8 at the rated speeds.
The USB PD port charges my S8 and iPhone X rapidly but fails to charge my iPad Pro 10.5 at all - the iPad senses power is connected but the battery remains static after 1hour plugged in. I have used only third party USB C to lightning cables, but these cables do charge my iPhone X so power is being delivered through them.
Hope this helps someone who is considering getting one of these for their iPad Pro.