This is the C52 control board (default S17 firmware) used to make the hash board tester for the Antminer full series (except graphics card miners and L3 series). By flashing the conversion file and test file of the corresponding miner model, a simple and fast hash board tester can be formed to help miners detect hash board failures quickly.

Applicable models include: Antminer S21pro, S21 Hyd, T21, S19Pro Hyd, S19Pro+ Hyd, S21, KA3, HS3, K7, D7, L7, S19kpro, S19XP, S19XP Hyd, S19Pro, T19 Hyd, S19 Hyd, S19jpro, S19j, S19+, S19jpro+, T19, S19, S19i, S17+, S17e, S17, S17Pro, T17+, T17e, T17, etc.

Note:

1) The control board defaults to S17 firmware;

2) If the control board is flashed with S19 series or above miner firmware, it can no longer be used to make a tester.