This is the newest revision of our . We now use a SMD 6-pin header on the bottom, which makes it smaller and more compact. Functionality has remained the same. Project description, more information and ordering can be found at https://www.sparkfun.com/products/9873 FTDI Drivers: http://www.google.com/url?sa=t&ct=res&cd=1&url=http%3A%2F%2Fwww.ftdichip.com%2FFTDrivers.htm&ei=D7WlSMGOJKOKiAGx-82BDQ&usg=AFQjCNE2pWdUmKFsw6OAb9hwsC8CtftzFQ&sig2=HQApwDh2F68V38PkMHy6jg