75db Second Hand ZEC Coin Miner 1680W Microbt Whatsminer M21 Hot Model

75db Second Hand ZEC Coin Miner 1680W Microbt Whatsminer M21 Hot Model

Description:

Whatsminer M21S has better chip performance, and can obtain higher computing power with less quantity. The measured computing power of the whole machine is basically stable at around 58.8T, the power consumption of the machine is about 3650W, and the power consumption ratio is 62.07W/T. Brand recognition is high.

Whatsminer M21S has a very complete outer box size and packaging. The protective layer inside the box is wrapped by a dust bag and added with an EPE board to enhance the vibration reduction effect. The EPE board is customized to fit the main body and has a power cord.

Miner Specifications:

FAQ:

The Miner Machine is different with consumer products of life , It is customized according to customers' needs. Please investment carefully . after deal then is agreed the sold condition of service as below :
1. No refund ,No goods return back after paid .
2. The Miner Machine have 180days warranty and guarantee period.
3. Because Market price instability factor , the product price maybe will change in anytime , so we will not infor each day and will asking increased price in order place time . the final price only after received order 100% payment then confirm.

Warranty :

1. A 180-day warranty is provided starting from the shipping date.
2. All sales are final. No refunds will be granted. Defective miners can be repaired for free if they fall under the Bitmain warranty policy. After the warranty period, machines can be repaired at the cost of parts and labor.
3. If you notice there are some loose heatsinks when you receive the miner, please inform us by email.com within 3 days from the date the package is received according to UPS/DHL/FEDEX's website.
4. We does not take any responsibility for or compensate for any loss as result of downtime caused by delays in transportation as a result of custom formalities or other reasons.

Warranty failure :
 

1. The Miner Without authorization to disassembly Machine / Without authorization to change or Replacement device .
2. Lightning stroke / Voltage surge / Damage caused by inferior power supply
3. Inflow water,Damage caused by damp and corrosion of circuit boards and components
4. The circuit boards burned or burned;
5. Over Clock
Please contact with us as soon as possbile if you get the thing happened above . we will help you to solution within short time and tell our service center the location nearly you.

Packing & Delivery:

1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)
2. Orders processed timely after the payment verification.
3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.
4. The images shown are not the actual item and are for your reference only.
5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.
6. If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction!