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Rectangular metal mining unit, matte grey finish, two front fans, Ethernet port visible

AFRNDK

AFRNDK Antminer S21+ BCH 235TH/s 3564W mining hardware

SKU CH-KAKR-S6S6J

SHA-256 ASIC miner delivers 235 TH/s at 3564 W with dual fans in a 400×195×290 mm frame

  • TypeMining Barebone System
  • Crypto AlgorithmSHA-256
  • Compatible CurrencyBitcoin (BTC)
  • Hashrate235T
  • Network ConnectionEthernet
  • Power Consumption3564W
  • SHA-256 algorithm mines Bitcoin (BTC) directly
  • 235 TH/s hashrate drives high daily output
  • 3564 W power draw balances performance and cost
  • Ethernet link keeps the rig stable on the network
  • 400 × 195 × 290 mm footprint fits standard rack shelves

Built for SHA-256 mining

The AFRNDK Antminer S21+ is an ASIC miner engineered for the SHA-256 algorithm used by Bitcoin. It delivers a hashrate of 235T while drawing 3564W of power. The unit is built for operators who need dedicated, high-throughput mining hardware rather than general-purpose compute.

Integration requirements

The miner connects to the network over Ethernet and requires a 220V input supply; incorrect voltage can damage the hardware. It operates between 10 and 40 °C with humidity from 10 to 90 %, and its two fans produce a noise level of 75db. The chassis measures 400 x 195 x 290mm, so rack or shelf space must accommodate those dimensions.

Suitability

This model suits professional mining farms and serious hobbyists who can provide stable 220V power, adequate cooling for 3564W heat output, and a tolerant noise environment. Home users on standard voltage, limited cooling, or noise-sensitive settings should evaluate alternative solutions.

Highlights

  • SHA-256 algorithm mines Bitcoin (BTC) directly
  • 235 TH/s hashrate drives high daily output
  • 3564 W power draw balances performance and cost
  • Ethernet link keeps the rig stable on the network
  • 400 × 195 × 290 mm footprint fits standard rack shelves

Specifications

BrandANTMINER
SeriesS21
ModelS21+
TypeMining Barebone System
Crypto AlgorithmSHA-256
Compatible CurrencyBitcoin (BTC)
Hashrate235T
Network ConnectionEthernet
Power Consumption3564W

Questions about this item

What power supply voltage does the Antminer S21+ require?

The unit requires a 220 V input; using a different voltage can damage the miner.

What are the physical dimensions and noise level of the S21+?

The chassis measures 400 x 195 x 290 mm and produces 75 dB of noise with its two fans.

What are the operating temperature and humidity limits for this miner?

It operates between 10 °C and 40 °C with a relative humidity range of 10 % to 90 %.

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