6 layers30.5 × 18 mmUSB SWDHarmonInstruments/JTAG_SWDA USB to JTAG and SWD adapter for use with OpenOCD46 parts5GPL-3.0
4 layers33.5 × 15 mmUSB JTAGHarmonInstruments/JTAG_SWDA USB to JTAG and SWD adapter for use with OpenOCD29 parts5GPL-3.0