The PowerPort PD 2 link is correct. The Amazon listing has “30W” in its top line. But that is marketing adding 18W USB-C and 12W USB-A together. On the second line you’ll see they state 18W USB-C. And the last bullet point below price lists the product name as PowerPort PD 2. The kind of thing why I use my own lists to keep track of what is what 
The Amazon link to the PowerPort Speed+ Duo was broken and is now fixed. Thanks for letting me know.
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