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The Antminer S21XP liquid cooling board upgrade kit replaces the original air-cooled heatsink, helping S21XP miners upgrade from air cooling to efficient liquid cooling. The S21XP water cooling board features an integrated precision water-cooling plate with a flow channel design, resulting in faster heat conduction and more even heat dissipation. It completely solves pain points of the S21XP, such as high-temperature throttling under high load, hashrate fluctuations, excessive noise, and dust accumulation and aging. It is suitable for home-based silent mining, small mining farms, and high-density data center cluster deployments, supporting stable 24/7 full-load operation, reducing overall power consumption while significantly extending the lifespan of the miner hardware.
For S21XP A3HB70501 version hash board:
Attention: The appearance of the S21XP water-cooled plate may vary depending on the production batch. Please refer to the actual product you receive.
For S21XP A3HB70503 version hash board:
For purchasing the S21XP water cooling system retrofit kit (with 12.8KW radiator), you will receive not only the water cooling plate but also the following products:
1. 12.8KW water cooling radiator for S21XP miner * 1
2. ZM-312 thermal paste 12W/m·k 110g for S21XP miner * 2
3. Antminer fan speed simulator emulator spoofers for S21XP miner * 2
4. PP10 PPF10 plug pipe end cap * Several (gift)
Due to the paste being a sensitive good and its transportation being restricted, it will be shipped separately using sensitive goods channels, and the delivery time will be slightly longer 8 to 20 working days.
Related products:
Antminer S21+ (plus) water cooling board upgrade kit
Antminer S21pro water cooling aluminum plate upgrade kit
Antminer S21 T21 water cooling plate upgrade sets
Jay hỗ trợ nhiệt tình
Best quality product with best price, every order provided delivery with 7-8day thank you zeus mining.
Thanks, Jay! He responded to my feedback right away and helped me with the program. Thank you for everything
You guys are amazing, you have provided me instant solution of my problem. Thanks for your help and support
Jay always reply fast and with excellent service.
Excellent, polite, and well-mannered salesperson
Good bro, he solve a firmware problem whit a s21+hyd A lots thanks
Payment method:
How to determine product prices and shipping costs?When you are ready to buy one or more products. You can consult the sales Manager to get a sample of the proforma invoice. The category, product price, and freight are included. |
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How to complete the payment?We have the following payment methods. You can tell our sales Manager which payment you prefer and complete it. After the customer service checks and confirms the payment is completed. Provide the proforma invoice. And we will prepare to ship. |
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Cryptocurrency Payment |
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Bitcoin - The payment method at the designated address is efficient and practical and can be used anywhere in the world. Wallet Address |
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USDT - The payment method at the designated address is efficient and practical and can be used anywhere in the world. Wallet Address |
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ETH - The payment method at the designated address is efficient and practical and can be used anywhere in the world. Wallet Address |
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LTC - The payment method at the designated address is efficient and practical and can be used anywhere in the world. Wallet Address |
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USDC - The payment method at the designated address is efficient and practical and can be used anywhere in the world. Wallet Address |
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Bank Transfer |
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Wire transfer - USD - YuanJi Card Number |
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Wire transfer - USD, EUR, GBP, HKD, CNH, CAD, SGD, JPY, AUD, NZD Card Number |
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JP MORGAN CHASE BANK, N.A. Card Number |
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Wire transfer - USD - Zhou sicong Card Number |
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人民币支付 - CNY payment Card Number |
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Other payment methods |
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Cooperation express: |
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Q: When will we ship after payment?
A: In order to ensure that the products we ship are in good condition. Issued approximately 1-2 days after receiving your payment.
Q: What if the product is damaged during transportation?
A: We will use a more robust package when shipping to avoid damage to the goods, and we can purchase transportation insurance in advance to reduce the loss of in the transport. although this problem is not common.
Q: What payment methods do we support?
A: We support bank transfer, wire transfer, BTC, third-party guarantee and Paypal.
Q: What should I do if there is a problem after receiving the products?
A: We have established good relationships with maintenance departments in many countries/regions in the world. For example, Venezuela, Iran, etc. If you have any questions within 3 days after receiving the goods, you can apply for after-sales service on the "My Order" page.
Q: Which express we support?
A: We will choose the cheapest and fastest transportation method for you. And we support DHL, UPS, TNT, Fedex, BRE, and also have express delivery services, such as Russia, the United States, Kuwait, etc.
Dear Customers,
Hello, September 25, 26, and 27, 2026 (GMT+8) are the traditional Chinese festivals - the Mid-Autumn Festival. Our company will suspend shipments during these 3 days and resume shipments on September 28 (GMT+8). We are deeply sorry for the inconvenience. Thank you for your understanding and support.
Best wishes,
ZEUS MINING CO., LTD.
China Mainland Hong Kong 
Business Hours: (GMT+8) 08:30-20:00 Mon to Sat 
Company Phone: +86-023-72227777
