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A: The S21 Pro hashboard has three distinct ASIC-chip zones (Left
8GHz FM receiver IC in a QFN48 package — the standard receive-side counterpart for FPV video transmitters
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Specification Detail Item KF1958 chip tin tool Compatible Chip Whatsminer KF1958 ASIC Compatible Miners Whatsminer M30 / M30S series Construction Precision steel fixture + alignment frame Workflow BGA chip tinning + replacement Condition Brand New
adjustable airflow from 180 to 400 L/min in three steps
BM1366BS ASIC Chip for Antminer S19kPro Hash board repair Grease fixture A: The S21 Pro hashboardBM1366BS ASIC Chip Replacement IC for Antminer S19K Pro Hashboard Repair The BM1366BS is the hashing ASIC chip used on Antminer S19k Pro hashboards. Each chip is a single point in the long serial chain that runs the length of the hashboard when one chip fails, the chain reports incomplete and the affected hashboard drops to a low or zero hashrate. Swap the failed chip out, reflow the chain, and the board returns to normal duty. Direct drop in
