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Rectangular silver power supply unit with ten six-pin connectors on the front face

AFRNDK

AFRNDK P21 3300W 12V 240A mining hardware

SKU CH-ZJ36-M607R MPN P21

Delivers up to 3600 W at 12 V with 93 % efficiency for Whatsminer M20S and M21S rigs

Model 3300W PSU for Whatsminer

  • Delivers up to 3600W total power for demanding mining rigs
  • Operates on 185–300V input for stable global mains compatibility
  • Provides 10–14.5V adjustable output with up to 300A current capacity
  • Includes ten standard 6-pin buckle terminals for direct miner connection
  • Runs at 93% peak efficiency with short-circuit, over-current, over-voltage and over-temperature protection

Power Supply for Whatsminer M20S and M21S

The AFRNDK P21 delivers up to 3300W of continuous power with a 12V output rated at 240A. It accepts an input range of 185V to 300V at 50Hz or 60Hz and operates from -10°C to +50°C.

Ten 6-pin buckle terminals and built-in protections

Ten standard P6 connectors supply multiple hash boards simultaneously. Short-circuit, over-current, over-voltage and over-temperature safeguards shut the unit down before damage can spread. Peak efficiency reaches 93% under load.

Suits miners replacing a failed Whatsminer PSU

Technicians restoring M20S or M21S rigs can swap the unit directly after confirming the exact model with engineering support. Operations needing different voltage rails, connector counts or a wider input range should evaluate alternative power supplies.

How it compares

Measured against everything we stock in ASIC Hardware & PCIe Risers, at today’s prices. Recalculated every night.

Price $293.99
Cheaper than about 76% of the 566 comparable items (median $792.99).

New to this? Buying an ASIC miner with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWHATSMINER
Model nameP21 Power Supply

Other versions of this model

5 more in the same range

Questions about this item

Will this PSU work with a standard 185–300 V supply?

Yes, the input voltage range is 185–300 V at 50/60 Hz, so it accepts common single-phase mains within that window.

Can it power a Whatsminer M20S or M21S without extra cables?

It includes ten standard 6-pin buckle terminals (P6) rated for up to 300 A total, matching the connectors used by those miners.

What protection features are built in?

The unit provides short-circuit, over-current, over-voltage and over-temperature protection to shut down safely under fault conditions.

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