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Amazon.com: USB to JTAG UART Module, USB to Serial Port Module, High Speed USB to JTAG UART/FIFO SPI/I2C, Multifunction USB to FIFO SPI/I2C Module, with 3Pin Header : Electronics
![JTAG (2x10 2.54mm) to SWD (2x5 1.27mm) Cable Adapter Board : ID 2094 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits JTAG (2x10 2.54mm) to SWD (2x5 1.27mm) Cable Adapter Board : ID 2094 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/2094-04.jpg)
JTAG (2x10 2.54mm) to SWD (2x5 1.27mm) Cable Adapter Board : ID 2094 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![hardware - Trying to identify the JTAG/RS232 port on this board - Reverse Engineering Stack Exchange hardware - Trying to identify the JTAG/RS232 port on this board - Reverse Engineering Stack Exchange](https://i.stack.imgur.com/2qVCN.jpg)