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Rectangular silver ASIC miner with front grille, rear power supply and Ethernet port

AFRNDK

AFRNDK Antminer S21 151TH/s 2643W ASIC mining hardware

SKU CH-KF9F-07D0M

SHA-256 ASIC miner delivering 151 TH/s at 2643 W with included PSU, 220 V input, RJ45 Ethernet and 0–40 °C operating range

  • TypeMining Machine/Miner
  • Crypto AlgorithmSHA-256
  • Compatible CurrencyBitcoin (BTC)
  • Mining HardwareASIC
  • Hashrate151TH/S
  • Power Consumption2643W
  • Delivers 151 TH/s SHA-256 hashrate for Bitcoin mining
  • Operates at 2643 W power draw with included PSU
  • Achieves sub-19 J/TH energy efficiency ratio
  • Compact 400 x 195 x 290 mm form factor
  • Runs on 220 V input in 0-40 °C ambient range

AFRNDK Antminer S21 SHA-256 ASIC Miner

This AFRNDK Antminer S21 is an ASIC miner built for the SHA-256 algorithm used by Bitcoin. It delivers a hashrate of 151 TH/s with a tolerance of plus or minus three percent. The unit requires a 220 V supply and connects to the network through an RJ45 Ethernet 10/100 M port.

Thermals noise and 2643 W power draw

Power consumption is rated at 2643 W while the miner operates in an ambient temperature range of 0 to 40 °C. The chassis measures 400 mm by 195 mm by 290 mm and weighs 15.2 kg. A power supply is included in the box.

Upgrade from older SHA-256 ASICs

The S21 reaches an energy efficiency ratio that exceeds 1 J/T for the first time in this product line. That efficiency gain makes the jump worthwhile when electricity cost per kilowatt-hour is high enough to offset the hardware outlay over the expected service life.

Highlights

  • Delivers 151 TH/s SHA-256 hashrate for Bitcoin mining
  • Operates at 2643 W power draw with included PSU
  • Achieves sub-19 J/TH energy efficiency ratio
  • Compact 400 x 195 x 290 mm form factor
  • Runs on 220 V input in 0-40 °C ambient range

Specifications

Brandantminer
ModelS21
TypeMining Machine/Miner
Crypto AlgorithmSHA-256
Compatible CurrencyBitcoin (BTC)
Mining HardwareASIC
Hashrate151TH/S
Power Consumption2643W

Questions about this item

How do I install the Antminer S21 151TH/s and what voltage mistake damages it?

Connect the included PSU to a 220 V supply, link the RJ45 Ethernet 10/100M port to your network, then configure the pool settings in the web UI. Supplying any voltage other than 220 V can permanently damage the miner.

What maintenance will the Antminer S21 151TH/s need over time?

Clean dust from the intake and exhaust vents regularly to keep airflow within the 0–40 °C ambient range. Replace fans when bearing noise appears, and reseat the power cables if the 2643 W draw becomes unstable.

What limit appears first when the Antminer S21 151TH/s runs continuously?

The 0–40 °C ambient temperature ceiling is the first constraint; sustained 2643 W heat output will push the unit past safe limits if cooling cannot maintain that range.

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