Basic breakout board for FTDI's popular USB to UART IC. Now with internal oscillator and EEPROM, the FT232RL is an impressive IC!
Need to add a virtual COM port to your PC? The TTLyFTDI adapter plugs onto your USB mini-B cable, and breaks out all the standard lines for Arduino-type TTL communication!
This board can do it all - break out the Synapse RF module pins, give you a USB port/FTDI chip to program, supply it with a regulated 3.3V, integrate a reset switch (for updating & erasing), and also give you mounting options.
These nifty little devices will allow you to pull power easily from a USB port!