This is a USB stick kit from Texas Instruments that is suitable for OpenTag development or evaluation. It uses the MSP430F5509, and OpenTag supports the onboard USB. The Demo_PaLFi Master (Gateway) application is the typical application for this board.
The cut PCB is approximately 48x15mm. The approximate bounding dimensions, including the USB port connector (Type-A male), are 62x15x6mm. The dimensions make it one of the most compact OpenTag boards available today.
The chip antenna and integrated balun from Johanson (0433BM15A0001) are designed specifically for the CC430/CC1101, so they allow an extremely compact form factor.
The 4-pin Spy-Bi-Wire interface can be used to load programs or debug. The 1.27mm 4-pin header is not included, so you must add one yourself. The soldering is not terribly difficult when using a fine-tip iron, but the PCB wiring of connection itself is quite frangible, and it is easy to damage the board if you put too much strain on the 1.27mm 4-pin header.
NOTE (JP): I recommend soldering a Spy-Bi-Wire eZ430 interface directly to this board if you plan on doing extensive test & debug.
The primary components of the design are:
Here is the Schematic PDF. It appears to have been designed in EagleCAD, so you might want to contact TI if you use EagleCAD and would like to update the hardware.