WD19 with USB Type A Adapter

@lacjo 

The WD19 can't work when connected via USB-A, at least not at full functionality. The dock won't be able to charge the system because USB-A doesn't support sending power from peripheral to host and also never supported carrying anywhere near enough power to run a laptop. And video output won't work because the WD19, like most USB-C docks and display adapters, relies on the source system having a USB-C port that supports DisplayPort Alt Mode, which involves the system having a GPU output wired to the USB-C port. That is an optional capability even among USB-C ports and therefore isn't even implemented on all systems that have USB-C ports -- and with those systems the WD19 won't be able to provide video output -- but that capability was never supported at all on USB-A ports. The only types of docks you can use via USB-A are docks that rely on "indirect display" technology like DisplayLink -- not to be confused with DisplayPort -- because that involves sending video as regular USB data. The Dell D6000 is a DisplayLink-based dock, but DisplayLink has several drawbacks that can be significant in some use cases, which I've written about in the post marked as the answer in this thread. And the D6000 can't supply power to a system when connected to it via USB-A.