This adapter is for ARM JTAG Programmer/Debuggers that support SWD interface to ARM Cortex processors (e.g. LPC1343) but have only the standard 20-pin ARM JTAG connector. This adapts the 20-pin 0.1"-pitch ARM Standard JTAG Connector to the 10-pin (physically 9-pin) 0.05"-pitch Cortex Debug Connector.
Programmers which support this adapter include the ARM-USB-OCD-H and the ARM-USB-TINY-H.
The adapter measures 50 × 40 mm (2.0 × 1.6") and includes a 20 cm (8") ribbon cable as shown.