Necromant writes:
This is a small tool for linux userspace that allows you to interact with GPIO lines on PL2303HX devices. It has only been tested on PL2303HXA, but may work for other revisions. Since no common GPIO driver for those exists at the time of writing in the linux kernel – this should serve as a placeholder till upstream guys fix that.
That is available at Github.
What does the picture have to do with the title and text?