ST-LINK V2 vs V3 (2026): Differences, Compatibility, Pinouts and Which Programmer to Buy
ST-LINK V2 and STLINK-V3 both program and debug STM32 microcontrollers over SWD, but they are not interchangeable pieces of hardware. Genuine ST-LINK/V2 is a straightforward USB full-speed probe with a legacy 20-pin connector and a maximum 4 MHz SWD rate.…