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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
it's almost certainly the controller (I²C / SPI bus fault)
you may need to reflash firmware via the micro SD slot
New and pulled ASIC chips can be defective — manufacturing rejects
The S21XP ships with two distinct hashboard revisions: A3HB70501 and A3HB70503
Antminer S21 XP IMM Oil-Resistant AC Power Cord 2.5mm² - 1.5 Meters bm1489 it's almost certainly the controllerAntminer S21 XP IMM Oil Resistant AC Power Cord 2. 5mm 1. 5m for Immersion Cooling This oil resistant AC power cord is engineered for the Antminer S21 XP IMM operating in oil immersion cooling environments. It features a 2. 5mm wire gauge over a 1. 5m length, with specialised insulation that resists degradation from continuous exposure to dielectric cooling oil. Standard power cords deteriorate rapidly in immersion tanks the insulation softens, swells
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