Installed is a (original) "standard" PL2303RA chip with a (lt. Prolific) max. Data throughput of 1Mbps - the work properly. Cables and plugs make a very sophisticated look - have not (yet) nothing to fault. Drivers there should be quite a while, at least for Mac / Windows users.
Conclusion: Unusually good quality for ~ 13 Euros.
(Have seen the price has risen to almost 17 euros, I would almost 5 euros more to spend on a faster chip, but that's up to you.)