This adapter board is designed to make it easier to use ARM dev boards that use slimmer 2x5 (0.05"/1.27mm pitch) SWD cables for programming.It's helpful when you are using products like the JTAGulator, STLink or SEGGER J-Link with tiny boards that use the 10-pin SWD programming connector,often Cortex M0 or M3's.
It's really just the breakout board and some header if you need it. It is very helpful when you want to do JTAG/SWD debugging
IDC 2X12 Wide Connector Kit (4 Pack)
This little 2x12 IDC Breadboard Helper is great in conjunction with any 24-pin IDC cables. It comes in two parts, a 'pin-through' socket and a male header. The so..