Bitmain Antminer S21 Pro BTC Miner 245Th/s 3675W
Antminer S21 Pro Bitcoin Miner, Crypto Algorithm is SHA256, maximum hashrate is 245TH/s, power consumption is 3675W. The power supply AC Input voltage is 200-240V, Power supply AC Input Frequency Range is 47-63Hz, when packaging is not included, The bare size of the machine is 400*195.5*290mm, and the bare weight is 14.2Kg.
$3,500.00
The price of miner changes from time to time. Price may be low or high. Please consult us for the specific price, we will give you the best price in the market.
Inventory: In Stock, deliver after payment
Due to tariff changes on Chinese products, we offer DDP shipping for ASIC miner orders (MOQ: 30 pcs) to buyers. For smaller quantities, please contact our sales team for better options.
Order 2 or more machines to save on shipping costs! Contact our sales team now to secure the best rates.
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Antminer S21 Pro
Algorithm
SHA-256
Hashrate
245Th/s
Power
3675W
Minable coins
BTC
BSV
BCH
- All miner include PSU
- Technical Support
- Low-value Declaration
- Machine detection
The Antminer S21 PRO 245Th/s 3675W is Bitmain’s new third-generation Bitcoin miner, boasting significant improvements in hashrate and energy efficiency compared to its predecessor, the Antminer S19 Pro, resulting in higher profitability. As a next-generation Bitcoin miner, it has garnered considerable popularity among miners.
The Antminer S21 PRO is one of the most powerful Bitcoin miners on the market, possessing exceptional energy efficiency and supporting multiple cryptocurrencies, including Bitcoin, Bitcoin Cash, and Litecoin, among others. However, its high price and power consumption translate to higher annual operating costs, leading to limited stock and frequent supply shortages.
The Antminer S21 PRO is a powerful, energy-efficient miner supporting multiple cryptocurrencies, making it a popular choice for miners seeking a powerful yet energy-efficient machine.
Specifications of Antminer S21 Pro
| Manufacturer | Bitmain |
| Model | S21 Pro |
| Release | July 2024 |
| Hashrate, Th/s | 245Th/s |
| Power on wall @25°C, Watt | 3675W |
| Power efficiency on wall @25°C, J/T | 15 |
| Noise Level | 76db |
| Fan(s) | 2 |
| Algorithm | Cryptocurrency | SHA256 | BTC/BCH/BSV |
Detailed Characteristics
Power Supply
| Power supply AC Input voltage range V | 220~277V AC |
| Power supply AC Input Frequency Range, Hz | 50~60 |
| Power supply AC Input current, Amp | 20 |
| Adapted AC Output power requirment W | 4000 |
Hardware Configuration
| Networking connection mode | RJ45 Ethernet 10/100M |
| Miner Size (Length*Width*Height, w/o package),mm | 450x 219 x 293mm |
| Miner Size (Length*Width*Height, with package),mm | 680x 390 x 450mm |
| Net weight, kg | 20 |
| Gross weight, kg | 22 |
Environment Requirements
| Operation temperature,°C | -20~45 |
| Storage temperature,°C | -20~70 |
| Operation humidity(non-condensing) , RH | 10~90% |
| Operation altitude, m | ≤2000 |
Additional Information
丨Buying guide
1. Website 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.
| Weight | 20 kg |
|---|---|
| Dimensions | 68 × 39 × 45 cm |
| Manufacturer | Bitmain |
| Model | S21 Pro Miner |
| Hashrate, TH/s | 220Th/s, 234Th/s, 245Th/s, 250Th/s |
| Power | 3550W |
| Size | 400*195.5*290mm |
| Weight | 14.2Kg |
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In-Stock Miners: Shipped within 3 business days. Bulk orders may require an additional 1-2 days for processing via DHL Express, UPS, FedEx, or TNT.
Pre-Order Miners: Delivery times depend on factory production schedules. Estimated dates are listed on the product page, but slight delays may occur due to manufacturing adjustments.
Order Processing: We operate on a first-paid, first-shipped basis. Once payment is confirmed, we dispatch your order promptly.
Bank Transfers (T/T): Verification takes 3-7 business days.
Cryptocurrency Payments: Typically processed within a few hours to 1 business day.
International Shipping: Most orders arrive in 5-8 business days. Remote areas may take 8-10 days.
Note: All sales are final—no refunds or returns. This is standard practice in our industry.
All products listed on our website are priced in US Dollars.
We accept payments via bank wire transfer or online cryptocurrency payment (BTC, ETH, KAS, USDT, USDC).
If you prefer offline payment, you can contact our online customer service.
Verify and only use the official collection accounts below:
TRC20 Start：TWPc8y End：ZAEHvT7b
TRC20 Start：TXjmjuw End: XiHnxjc9
ERC20 Start：0xbca5ff End：fc74050b
SOL Start：DGvECc6k End： dsmUnYsaQL
Cold wallet:
SOL Start：TU5hjN End： ZwwPkfuK
USD bank account :
Bank name: Asia Account
Starts with 798, ends with 946
US account
Starts with 820, ends with 154
Note: Offline orders are only valid when placed within the social media group that includes our CFO, Lili.
(WeChat / Telegram / WhatsApp: +86 17868116983)
Important: All cryptocurrency payments received on the website are automatically converted to USDT. If a product is out of stock, we will contact you for a refund. The refund will be based on the USD price at the time of your original order.
We offer hassle-free DDP shipping to select destinations, including:
✅ United States | ✅ Canada | ✅ UAE (Dubai) | ✅ Select EU Countries
Need DDP? Contact our support team before ordering.
For Non-DDP Shipments:
Customs duties and import taxes are not included in your order total and must be paid upon delivery.
To help reduce potential fees, we can provide a lower declared value on the commercial invoice (upon request).
Important:
If customs requires additional documents, notify us immediately to avoid delays or extra charges.
We’ll supply all necessary paperwork (e.g., commercial invoice, packing list) to ensure smooth clearance.
Tip: Contact your local courier (DHL/UPS/FedEx) directly to handle duty payments swiftly.
New Miners (Factory-Sealed):
Warranty Period: 6–12 months (varies by manufacturer, starting from production date).
Voided If: Damage occurs due to misuse, failure to follow instructions, or unauthorized modifications.
Used Miners:
No warranty or after-sales service is provided.
Pre-Shipment Verification: Testing videos will be shared for your approval before shipment. Once confirmed, the sale is final.
Returns & Repairs:
Buyer Responsible for all return shipping and related costs.
Repair Timeframe: Depends on the issue’s complexity (we’ll provide an estimate upon assessment).
Note: All sales are final—please inspect testing materials thoroughly before confirming used miner orders.
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Customer FAQs
We offer special discounts and holiday deals from time to time. You can visit our website or join our TG group (https://t.me/xonmining_china) for the latest information. We suggest you join our TG group, as our discount offers are usually announced first there.
Of course, we also offer wholesale prices for bulk orders. For large orders, we will provide customized discounts and exclusive service support to help you purchase ASIC Miners at the most competitive market prices. You can contact us at any time via email (contact@xonmining.com) or Whatsapp(+86 13631656695).
Yes, you can definitely pick up your machine yourself. Our warehouse is in Hong Kong, China. You can pick it up yourself or have it delivered to your freight forwarder.
Yes, we sell brand new, factory-sealed Miners. We purchase equipment directly from the factory to ensure that all products are brand new and unused.
Under normal circumstances, miners are directly dispatched from the warehouse without the need to open the package. Only when requested by the customer will we open the package for testing and take photos for record before shipment.
Similarly, for some models that have been on sale for a longer time, we also offer second-hand Miners for sale. Customers who have the need to purchase second-hand equipment are also welcome to contact us at any time.
We have no minimum order quantity limit. We serve miners of all sizes and understand the needs and concerns of various types of investors. Contact our professional sales team, and they will solve most of your problems.
Sure - you just need to follow these steps to ensure the security of your order
As confirmed on the official certification page of 1. First of all, through our XON MINING, staff identity: https://xonmining.com/about-us/
2. Place orders only within the social media group with CEO Jack (wechat /TG/Whatsapp: +86 13631656695)
3. Make payments only through our official collection account:
TRC20 Start: TWPc8y End: ZAEHvT7b
TRC20 Start: TXjmjuw End: XiHnxjc9
ERC20 Start: 0xbca5ff End: fc74050b
SOL Start: DGvECc6k End: dsmUnYsaQL
USD bank account :
Bank name: Asia Account
Starts with 798, ends with 946
US account
Starts with 820, ends with 154
Following these steps can ensure that your payment funds reach the right place and that your transaction is fully protected.
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