Original DF1203812B2FN MARTECH Cooling Fan for Antminer L9 S19kPro S21 S19jxp KS5Pro T21 Connector:Linear 4p KF2510 for Antminer KS3 X5 Z15pro S19xp S19 S19pro S19jpro Antminer Modern Square 4pin Silver

Antminer Modern Square 4pin Silver Industrial Silencer (L9 AL1 KS5 S19jXP)

this gadget delivers lab-grade precision in a portable

Erase and verify program memory — clean slate before flashing a known-good image

and the hole geometry stays inside tight tolerance to the S21+ chip footprint

Innosilicon Test Fixture Specifications

Original DF1203812B2FN MARTECH Cooling Fan for Antminer L9 S19kPro S21 S19jxp KS5Pro T21 Connector:Linear 4p KF2510 for Antminer KS3 X5 Z15pro S19xp S19 S19pro S19jpro Antminer Modern Square 4pin SilverMartech DF1203812B2FN 120mm 7000RPM Cooling Fan High Speed PWM Replacement for Antminer L9 S19kPro S21 S19jxp KS5 Pro T21 The Martech DF1203812B2FN is a 120 120 38mm 12V 4. 5A 7000RPM cooling fan used as a front and rear fan across most modern Antminer and Iceriver hashboard chassis. Direct replacement when an original fan fails typical failure modes include bearing wear (manifests as audible whine or wobble), tachometer signal loss, or full stall