The Optoma Universal (24pin) to VGA 0.5 m f/ PK201/PK301 is a rather long name for a short (19.7"/50 m) cable. Let us explain.
Optoma makes these great little projectors, among them the PK201 and the PK301. Optoma calls them Pico Projectors. They're so small there isn't enough space to fit all of the different input and output connectors you might need. So Optoma engineers created what they dubbed a Universal 24 pin I/O connector. Now they can go crazy creating all sorts of cables to meet your needs. One end plugs into the Universal connector and the other end can have whatever plug or plugs you need.
In this case the "other end" contains a standard VGA connector. So this short cable with the long name allows you to pump VGA computer video into your PK201 or PK301 Pico Projector.