An adapter that converts a traditional JTAG connector (2×10 0.1″/2.54mm) to a narrower SWD connector (2×5 0.05″/1.27mm). It will work perfectly as a convenient solution in case of the need to use a programmer/debugger with a JTAG 2×10 pin connector with a board/set with an SWD 2×5 pin connector or vice versa.