Asic Miner Market

Whatsminer M21 28T – USED

(1 customer review)


Second-hand products.
Minimum order 10PCS

28T Whatsminer

Out of stock


Whatminer M21 28T Miner

Whatsminer M21 28T from MicroBT mining SHA-256 algorithm with a maximum hashrate of 31Th/s for a power consumption of 1860W.

Second-hand products.
Minimum order 10PCS


Manufacturer MicroBT
Model Whatsminer M21
Release August 2019
Size 200 x 300 x 440mm
Weight 7150g
Chip name TSMC
Chip size 12nm
Noise level 75db
Power 1860W
Interface Ethernet
Temperature -5 – 40 °C
Humidity 5 – 95 %

Whatsminer M21 28T :

Whatminer M21

Turning to mining fundamentals, the BTC network is secured by the SHA-256 consensus algorithm.

The most profitable SHA-256 ASIC miners currently available are; the ASICminer 8 Nano Pro, Bitfury Tardis, Bitmain Antminer S17, and MicroBT Whatsminer M215.

Ther eare Two NEW SHA-256 ASIC miners about set to be released later this year, one of them being the StrongU STU-U8, and the other being the MicroBT Whatsminer M21.


More information:

Network factors that influence mining profitability include; price, block times, difficulty, block reward, and transaction fees.

Looking into electricity costs is also a significant factor when determining profitability for various ASICs.

During the flood season, from April to October every year in the Chinese province of Sichuan, electricity drops to a cost of US$0.04 cents KWh due to the abundance of hydroelectric power.




high profitable cryptocurrency miners. We supply ASIC miners and Graphics processing unit (GPUs). All products are authentic and Brand new

Asic miner

Additional information

Weight 10 kg

Warranty & Buyer Protection


A 180-day warranty is provided starting from the shipped date.

Before shipping

Strict quality inspection and carefully packed.

Within warranty period

Free repair/replacement service.

After warranty period

There will be repair/replacing cost incurred.

After-sale support

Technical support and repairing service are available for the full-life of the miner.

AsicMinerMarket Service

You are protected from purchase from Click to Delivery. And you enjoy escrow for your purchase

Return & Refund Policy

Once sold not refundable, unless

  • Asic Miner Market fails shipping your order due to Asicminermarket liability
  • Or, product received is significantly different from what advertised due to Asicminermarket liability(submodel switch doesn’t qualify for reason to refund)

On-time Delivery

If you do not receive your purchase within 23 days(which exclude preorder items or shipping delay caused by manufacturers’ production capacity or customs reasons, wars or any other contingencies beyond the Asicminermarket control), you can ask for a full refund before order completion.


Fedex Fedex 3-7 days 3~7 business days
UPS UPS 4-8 days
DHL DHL 3-7 days

Shipment issues
1. Taxes and Custom Duties
Our products are excluded from all value added taxes and customs duties. You will be solely responsible for paying any outstanding taxes and duties as per your country’s law and customs.

2. The product has been returned.
We will re-ship your order, but any additional charges (“Return Expense”) shall be borne by you. The following situations will cause return:

You didn’t pay the tariff in time.
The delivery address is incorrect.
The local logistics company failed to contact you.
Ⅳ. I have problems with customs clearance
If you encounter problems during customs clearance, please submit a support ticket. Staff will assist you to deal with related issues.

If you need to specify a logistics company or declare a price, please leave a note when placing an order.
Products may be sent from different warehouses. If you purchase several products, you will receive multiple tracking numbers

1 review for Whatsminer M21 28T – USED

  1. Cihan

    Kargo Ve PCU fiyatları içinde mi vergi olayı nasıl olur gümrük koşuları nedir bilgi verebilirmisiniz

    • admin

      The price of the goods does not include customs duties.
      We can define this value to customs.

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