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In Stock Whatsminer M21s 50t Used Miner Bitcoin Mining Machine Asic Blockchain Miners In Stock

$3,317.20 $3,757.20

SKU: 3256804519345361 Category: Tag:



  • Weight: 17kg
  • Power Consumption: 2630W
  • Transmission Rate: 10/100Mbps
  • Model Number: Whatsminer M21
  • Brand Name: QJKDZ
  • Origin: Mainland China
  • Hash Rate: 56t
  • Kind of Currency: btc
  • Interface Type: USB 3.0, USB3.0
  • Origin: China
  • Temperature: 5 – 40 °C
  • Network Connection: Ethernet
  • Voltage: 12V
  • Noise Level: 75dB
  • Cooling/Fan(S: 4

  Note: Due to the price difference, direct orders are not supported. Please consult customer service before purchasing


  Product Description


   Packing & Delivery




   Company Profile



St mit Electronics Co., Ltd.,. Was established in 2021. Although we are a young company, our company has gathered a large number of professionals in the minig machine and Graphics card industry. We are a professional ming machine and Graphics card supplier, for all over the world to provide the industry’s original brand mining machine and Graphics card .
We adhere to the management principles of quality first, customer first and credit-based” and always do our best to satisfy potential needs of our customers.

Company Advantages:

1)-We are a corporate reputation company because we value corporate reputation:

100% Guaranteed the fast shipping.

100% Guaranteed the original factory.

100% Guaranteed The most professional technical.

2)Each miner will be inspected before shipping out. In time after sale customer service and professional technical support.

3)-Located in Shenzhen which has one of the biggest Graphics card market in the world.



Q1: How can I get your latest product and price list?

A1: Please provide your contact information (Such as Email, Whatsapp, Skype,Trademanager, Wechat) to us. We will contact you and send our quotation to you as soon as possible.

Q2: Who could provide the Warranty Service?
A2: If it is within the warranty period, the original factory of the miners will be responsible for it. If it is out of warranty,we will provide paid maintenance service.

Q3: How can you guarantee the quality of used/second hand machine?
A3: If the machine is used one which is out of warranty, we will test each one before shipment to ensure its function well.

Q4: How about the payment?

A4: We mainly support T/T bank transfer, Credit Card, Crypto payment like BTC, USDT, ETH also acceptable.

Q5: What is your shipping methods?
A5: We use UPS, DHL, FedEx or the shipping agent as your request.

Q6:How about your delivery time?
A6:The brand-new machine is have in stock so that it will take only  1 to 3 days to send the machine after receiving your payment.
 The second hand machine is will take 5 to 7 days to send the machine after receiving your payment.



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