The microUSB Programming Adapter (uUSB-PA5) is a USB to RS-232 bridge converter which is very small and easy to use. It uses a mini-B type USB connector to connect to your PC and is based on the FTDI FT232RQ USB to Serial Bridge IC from FTDI. The μUSB-PA5 allows you to communicate with 4D Systems screens and controllers.
It'll give you multi baud rate serial data up to 3M baud rate and access to additional signals such as flow control. The main 5 pin interface is a standard 2.54mm (0.1") pitch female header, designed to connect directly to a majority of the 4D Systems modules.
RX and TX signals are both 3.3V and 5V tolerant. This module replaces the variety of existing 4D serial bridges for the LCD kits that we carry. While a large range of 4D Systems modules are compatible with this programming adapter, some are not, for mechanical reasons.