Product description: New Antminer S19J BeagleBone Black Control board
The S19J BB black is a part of the Antminer S19J / S19J Pro BB control board, and it is only used for S19J / S19J Pro; it does not include the IO board, it is the castrated version of Antminer S19J BB board, the version shipped is S19J by default, if you need a specific version, please get in touch with the salesperson for remarks
