Antminer S21 Pro 234T
Original price was: $5,000.00.$4,478.00Current price is: $4,478.00.
The Antminer S21 Pro delivers a hash rate of 234 TH/s with exceptional energy efficiency of 15.0 J/TH. Optimized for large-scale mining operations, this air-cooled unit offers reliable performance, low power consumption, and a robust design—making it a solid choice for miners focused on long-term efficiency and ROI.
1997 in stock
| Performance Curves
1. Hashrate vs. Ambient Temperature
2. Power Efficiency vs. Ambient Temperature
(1-1) The hashrate value, and power efficiency on wall are all typical values. The actual hashrate value fluctuates by ±3%, and the actual power efficiency on wall fluctuate by ±5%.
| Specifications
| Product Glance | Value | ||
| Model | S21 Pro | ||
| Crypto algorithm/coins | SHA256 | BTC/BCH/BSV | ||
Typical hashrate, TH/s(2-1) |
| ||
| Power on wall @25°C(2-2), Watt(2-1) |
| ||
| Power efficiency on wall @25°C(2-2), J/TH(2-1) | 15 |
| Detailed Characteristics | Value |
| Power supply | |
| Phase | 1 |
| Input voltage(3-1) , Volt | 220~277 |
| Input frequency range, Hz | 50~60 |
| Maximum input current, Amp | 20 |
| Hardware Configuration | |
| Network connection mode | RJ45 Ethernet 10/100M |
| Server size (length*width*height, w/o package), mm | 450*219*293 |
| Server size (length*width*height, with package), mm | 630*350*430 |
| Net weight, kg | 18.5 |
| Gross weight, kg | 21.5 |
| Noise(3-2)@30℃, dBA | 76 |
| Environment Requirements | |
| Operation temperature,°C | -20~45 |
| Storage temperature,°C | -20~70 |
| Operation humidity(non-condensing), RH | 10%~90% |
| Operation altitude(3-3), m | ≤2000 |
Notes:
(2-1) The Hashrate value, Power on wall, and Power efficiency on wall are all typical values, The actual Hashrate value fluctuates by ±3%, and the actual Power on wall and Power efficiency on wall fluctuate by ±5%.
(2-2) Inlet air temperature.
(3-1) Caution: Wrong input voltage may probably cause server damaged.
(3-2) The noise is loudest when the fan is under maximum RPM(rotation per minute).
(3-3) When the server is used at an altitude from 900m to 2000m, the highest operating temperature decreases by 1℃ for every increase of 300m.
| Payment
1. USDT(TRC20), USDT(ERC20), BTC,ETC and USD are accepted in this batch.
Do upload the bank proof of transfer within 48 hours. If no proof of transfer is loaded within this time period, the order will expire.
2. The shipping cost, customs charges and taxes (if any) are not included in the retail price shown above.
3. Please fill your desired quantity, shipping address and select your preferred shipping service while placing an order to learn the shipping cost to your shipping address.
4. Special Provision: After an order has been submitted, a request to cancel the order, refund any part of the ordered amount or change the ordered item(s) to different items(s) or different batch(es) WILL NOT BE ENTERTAINED by OhBiz. We advise you to make any purchase only after consideration.
5. To get a fast response from our team for any order or sales related inquiries please send a email to sales@ohbiz.io.
6. The unit price and total price of the products, the amount paid by you shall be all denominated in U.S. dollars.
Please DO NOT place your order with anyone or anybody claiming to be an official Oh Biz representative over email or Skype. It can be a scam and your confirmed order may never be delivered in such cases. Oh Biz is neither responsible for nor offers any kind of compensation in such cases.
Note: The price of cryptocurrency mining machines has to be adjusted frequently in accordance with variables like the exchange rate of the cryptocurrency with fiat, the cryptocurrency's network difficulty, or the expected difficulty increase. Refund requests based on price changes WILL NOT be honored.
| Purchasing Guidelines
1. The shipping costs, customs charges, and taxes(if any) are not included in the retail price shown above.
2. After an order has been submitted, a request to cancel the order, refund any part of the ordered amount or change the ordered item(s) to different item(s) or different batch(es) will not be entertained by Oh Biz.
3. The pictures shown are for reference only; the final shipment version shall prevail.
| Shipping Details
1. Shipments will be scheduled on a first-paid-first-ship basis for orders on which Oh Biz has received full payment.
2. You are responsible for any customs delays or returned shipments due to a lack of proper documentation. It's highly recommended to be aware of local customs clearance policies and to prepare all customs documentation ahead of time to avoid any customs clearance delays or unexpected costs.
| Warranty
1. A 365-day warranty is provided starting from the shipping date.
2. If the user fails to use the product per the given instructions, specifications, and conditions provided or changes the function settings of the unit without Oh Biz's prior consent, Oh Biz will not be liable for any damage arising therefrom.
| Crypto |
BTC |
|---|---|
| Cooling Method |
Air Cooling |
| Power Cord |
C20 ,P33 ,US ,OK/UE/AU |
Bitmain Technologies is a leading Chinese company specializing in cryptocurrency mining hardware. Founded in 2013, it is best known for its Antminer series, which are powerful and energy-efficient ASIC miners widely used for Bitcoin mining.
In addition to hardware, Bitmain also operates major mining pools like Antpool and BTC.com, making it a key player in the global blockchain ecosystem. The company is also expanding into AI chip development and high-performance computing.
Shipping for In-Stock Orders
In-stock miners will ship within 3 business days after full payment is received. For bulk orders, please allow an additional 1–2 days for handling. We ship via DHL Express, UPS, FedEx, or TNT, depending on your location and preferences.
Payments made by wire transfer (T/T) may take 3–7 business days to verify, while cryptocurrency payments are usually confirmed within a few hours to 1 business day. Shipments are processed on a first-paid, first-shipped basis.
Shipping for Pre-Orders
Pre-order miner deliveries are based on the factory’s production schedule. Estimated delivery times are listed on the order page but may shift due to production delays.
Once shipped, international delivery typically takes 5–8 business days, with remote areas potentially requiring 8–10 days.
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