Used Second Hand Whatsminer M21S 58T Btc Mining Machines

What the M20, M21, M21B, M20S, M21S is the ultimate win-win success replay of earlier models of the M10 series. All products are Samsung 8nm chip, and released a new microBT logo, more rich functions.

The company focuses on the production and design of high-end 28nm/16nm/7nm working chips, and provides development/assistance in blockchain technology, cloud computing, artificial intelligence and other fields.

Specifications

What m21S calculate power 58T, than M21 model has more advantages. The size is 155 x 240 x 390mm and the weight is 7.1kg. This size allows for a smaller processing volume and helps save mine space.

M21 is equipped with P5-12-2200-V1 power supply, output DC 12.8V 172A, mining 10A socket effect is good.

The power supply is equipped with an aluminum bracket to protect the wire on the connector side. It serves as an easy-to-use handle.

The working efficiency of the mining machine is 0.06j/gh. It has two 12038 cooling fans, one for blowing and one for bleeding. Fan power supply is 12V 2.8A, same as the old model.

Detial Photos

In the event of the above situation, please contact us as soon as possible, we will provide you with help and solutions in the shortest possible time!

Company Profile

Packaging & Shipping

Our packaging method is to choose the original packaging or use the air column to wrap the machine, and then put the mining machine in the box and fix it with foam. Outer packaging We provide wooden pallets or wooden boxes for the boxes to ensure that the machine can reach your designated location intact. We use UPS, DHL, FedEx, EMS, TNT or freight forwarders as your requirements.

After Sales Service

Our company has professional test rooms and test maintenance teams in Shenzhen, Inner Mongolia, Sichuan, Xinjiang and Yunnan, and even in the United States and Russia. We are the only professional testing organization in Shenzhen. The testing room can accommodate 400 machines at the same time, and the shipment volume is between 700 and 800. We can ensure that every mining machine sent to you is perfect, if you receive it, if there are any problems after delivery, we will provide you with after-sales service as soon as possible.

FAQ

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. Test video could be provided.

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, EMS, TNT or the shipping agent as your request.