Works perfectly. Connected to my 61W PD3.0 charger and it negotiated 20V after approximately 2 seconds, no issues. I ran a test drawing 55W for 20 minutes and it worked perfectly. It remained at 20V the whole time. This adapter does get warm, about 40°C, but that is fine, considering it is passing 2.8A in my test. The power conductors in this adapter are thick, about 18-20AWG so very good for this current amount. I cut off the laptop connector and use the bare conductors to test my chargers at 20V.
I use this cable regularly with my PD charger as a 20V power supply. Works great
Good quality in the connector but also in the inner cable.