Taking a look at this guy - https://www.sparkfun.com/products/9873
The 5v version says it can "become" a 3.3v one, by cutting a trace or installing a jumper. The 3.3v does NOT say the same, but the comments lead one to believe it is a possibility. Anyone have direct experience with the 3.3v unit and able to confirm it can "become" a 5v part?
Also, using a logic level converter, is it possible to to by one FTDI board and use it with both 3.3v and 5v targets?