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The BM1397

The BM1397 is an undocumented SHA256 mining ASIC from Bitmain. It’s mostly used in the Antminer S17 and T17. BM1397

PriceNew: ~$20 Used: ~$6 in small quantities
Seraial ProtocolUART
BaudrateDefault: 115200bps, up to 6Mbps
Footprintsame as BM1387


The BM1397 has two “modes”, which change some of the pins to make daisy-chaining of ASICs easier.


It has multiple versions. A Guide can be found here