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Rectangular silver mining unit with dual front fans and mesh vents

AFRNDK

AFRNDK Antminer S21 Pro 234Th/s 3510W mining hardware

SKU CH-1BKC-EW1F6

SHA-256 ASIC miner delivering 234 Th/s at 3510 W with dual-fan air cooling

  • TypeMining Machine/Miner
  • Crypto AlgorithmSHA 256
  • Compatible CurrencyBitcoin (BTC)
  • Mining HardwareASIC
  • Hashrate234Th/s
  • Power Consumption3510W
  • SHA-256 ASIC delivers 234 Th/s for Bitcoin mining
  • Air-cooled design runs at 75 dB with dual fans
  • Operates reliably from 5 °C to 45 °C ambient
  • Ethernet interface integrates easily into existing networks
  • Requires 220 V to 240 V input for stable operation

SHA-256 ASIC for Bitcoin miners

The AFRNDK Antminer S21 Pro is an air-cooled ASIC built for the SHA-256 algorithm used by Bitcoin. It delivers a nominal hashrate of 234Th/s while drawing 3510W. The unit is intended for operators who run dedicated 220V-240V circuits in a controlled environment.

Ethernet link and thermal envelope

The miner connects through a single Ethernet interface and is rated for ambient temperatures from 5 °C to 45 °C with humidity between 5 % and 95 %. Two internal fans produce a noise level of 75 dB, so the rack or room must tolerate continuous high-volume airflow. Power input peaks at 3531W, requiring stable mains supply within the stated voltage window.

234Th/s headroom and power ceiling

At the rated 234Th/s the device offers a fixed performance ceiling; higher output is not available on this hardware. The 3510W typical draw and 3531W maximum define the electrical headroom — any site infrastructure must sustain that load continuously. Operation outside the 5 °C to 45 °C range or without adequate ventilation will cause thermal throttling or shutdown.

Points forts

  • SHA-256 ASIC delivers 234 Th/s for Bitcoin mining
  • Air-cooled design runs at 75 dB with dual fans
  • Operates reliably from 5 °C to 45 °C ambient
  • Ethernet interface integrates easily into existing networks
  • Requires 220 V to 240 V input for stable operation

Caractéristiques

BrandANTMINER
SeriesS21 PRO
ModelS21 PRO
TypeMining Machine/Miner
Crypto AlgorithmSHA 256
Compatible CurrencyBitcoin (BTC)
Mining HardwareASIC
Hashrate234Th/s
Power Consumption3510W

Questions sur cet article

What power supply voltage does the Antminer S21 Pro require?

The unit needs a 220‑240 V supply; using a lower voltage can damage the miner.

How much heat and noise should I plan for in a home or small facility?

It draws 3510 W and runs at 75 dB, so expect significant heat output and loud fan noise that needs proper ventilation.

What are the physical dimensions and network connection type?

The chassis measures 400 × 195 × 290 mm and connects via a single Ethernet port.

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