https://www.sifive.com/boards/hifive1
HiFive1 (Discontinued) - SiFive Boards
SiFive HiFive1 is an Arduino-compatible development board featuring the SiFive Freedom E310 (FE310) SoC, making it the best way to prototype and develop RISC-V...
hifive1discontinuedsifiveboards
https://www.sifive.com/boards/hifive1-rev-b
HiFive1 Rev B (Discontinued) - SiFive Boards
hifive1 rev bdiscontinuedsifiveboards