You'll be surprised first and foremost by the size of this USB/serial converter no larger than the moulded plug on a USB cable!
And you're also bound to appreciate that fact that it's practical, quick to implement, reusable, and multi-platform (Windows, Linux, etc.) and yet for all that, not too expensive.
We don't think much of the various commercially-available FT232R-based modules. Too expensive, too bulky, badly designed, ... That's why this project got designed in the form of a breakout board (BOB).
This product uses a mini-USB-B-cable to connect to your PC (not included).