Used Bitmain Antminer S21+ 235Th/s 3877W Bitcoin Miner

Antminer S21+ 235Th/s is an air-cooled mining machine released by Bitmain in June 2025, adopting the SHA-256 algorithm. Its power consumption is 235Th/s and the power reaches 3877W. It is a high-power Bitcoin Miner, suitable for large buyers and miners to deploy, and can effectively obtain good returns for miners. Welcome to contact us to obtain the latest quotation.
Specifications of Antminer S21+ 235Th/s



Manufacturer
Bitmain


Model
Antminer S21+ 235Th/s


Release
June 2025


Hashrate, Th/s
235Th/s


Power on wall @25°C, Watt
3877W


Power efficiency on wall @25°C, J/Mh
16.498j/Th


Noise Level
75db


Cooling
Fans（2）


Algorithm | Cryptocurrency
SHA-256 algorithm | BTC丨BCH丨BSV丨NMC丨PPC



Detailed Characteristics
Power Supply



Power supply AC Input voltage range V
220~277V AC


Power supply AC Input Frequency Range, Hz
50Hz/60Hz


Power Cable, A
20A



Hardware Configuration



Networking connection mode
RJ45 Ethernet 10/100M


Miner Size (Length*Width*Height, w/o package),mm
449*219*293mm


Server size (length*width*height, with package), mm
640*360*450mm


Net weight, kg
22.9


Gross weight, kg
5.7



Environment Requirements



Operation temperature,°C
10- 40°C


Storage temperature,°C
-10~60°C


Operation humidity(non-condensing) , RH
5 – 95 %


Operation altitude, m
≤2000


Warranty
365 days



 

 
Additional Information
丨Buying guide
1. Antminer S21+ 235Th/s prices do not include shipping, customs fees, and taxes, for some countries, we can provide low-price declaration as well as DDP service.
2. Product display is for reference only, the actual shipping version may change due to manufacturer updates.
3. X-ON MINING protects customer information, ensures the safety of customer transactions, and has cooperated with asicminervalue, asicminercompare, asicprices and other brands, with a high degree of reliability.
丨Shipping details
1. We will arrange the delivery of full payment orders according to the principle of payment order.
2. For pre-order orders, subject to the factory delivery date, X-ON MINING will inform the customer in time and follow up on the order at any time.
3. Need to buy additional power supply, chassis, water cooling air cooling system, please contact our salesman for detailed communication.
4. We provide verified video before delivery to ensure the normal operation of the machine.
丨Warranty
1. For different mining machines, Bitmain offers different warranty periods, which can be viewed in the repair guide.
2. In warranty time, the customer bears the postage to send back, Bitmain bears the postage to send back to the customer;
For machines outside the warranty, the customer needs to pay for maintenance and postage, machines paid on arrival will be rejected.
3. Do not assemble the faulty computing plate of multiple mining machines into one mining machine for maintenance.
4. Under normal circumstances, the maintenance cycle is about one week to complete the repair and return.
5. See the full list of terms at https://service.bitmain.com/support/terms