BITMAIN Antminer T21 190T BTC Used Miner USA Stock
About US
Why Luckyspiders?
In nature, spiders don't blindly chase prey.
They weave webs—and then wait patiently.
Everyone should have easier access to Bitcoin. Low-power personal Bitcoin lottery machines participate in the block race with extremely low computing power—offering opportunity, not promises.
Our Advantages:
🏭 In-house R&D and Production
🎨 Industrial Design Experts
🔧 Integrated Hardware and Software Development
Refund policy
We hope you are satisfied with every product you purchase from Luckspiders.
If you are not satisfied with your order, please feel free to contact our customer service team, and we will be happy to assist you.
🔄 30-Day Money-Back Guarantee
We offer a 30-day no-questions-asked return policy.
All products are covered by a 30-day 100% money-back guarantee.
To request a return or refund, please contact our customer service team within 30 days of receiving your order.
📩 Customer Service Email: service@luckspiders.com
❌ Order Cancellation
All orders can be canceled before shipment.
If your order has been paid for but needs to be modified or canceled, please contact us within 6 hours of placing the order.
Once the order has entered the shipping process, it cannot be canceled.
🚫 Non-Returnable Items
The following types of items are not eligible for return or refund:
Customized products (e.g., special orders, personalized items)
⚠️ No Refunds Under the Following Circumstances
We will not be able to provide a refund under the following circumstances:
📍 Order undeliverable due to buyer's reasons
(e.g., incorrect or incomplete shipping address provided)
💥 Product damaged after delivery due to human error
Please check the packaging and product condition immediately upon receiving the package. If you find any problems, please contact us promptly.
📦 Damaged or Defective Items
If you receive a damaged or defective item, please contact us as soon as possible after receiving the item and provide clear photos or videos explaining the situation.
We will provide you with a replacement or refund solution based on the actual situation.
📧 Need Help?
If you have any questions about returns, refunds, or your order, please feel free to contact us via email:
👉 service@luckspiders.com
Our customer service team will reply as soon as possible and assist you in resolving the issue.
How to pay with a credit card
💳 Luckspiders Payment Methods & Security
🏦 Accepted Payment Methods
We accept the following secure payment options:
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Visa ✅
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MasterCard ✅
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PayPal 💻
When choosing PayPal at checkout:
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You will be redirected to the PayPal website.
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After completing your payment, you will return to https://luckspiders.com/ to finalize your order.
If your credit card transaction is approved, the amount will be held immediately and you will receive an order confirmation via email ✉️.
If the transaction is not approved, your order will be canceled.
For any issues with card payments, please contact your bank or card provider 🏦.
💡 How to Use Credit Card Payment via PayPal
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Select PayPal at checkout.
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Choose “Pay with Credit or Debit Card” on PayPal’s page.
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Complete the payment process securely.
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Return automatically to Luckspiders to finalize your purchase.
🔒 Payment Security
Blocksolo uses Secure Sockets Layer (SSL) technology to encrypt and protect all data you send online.
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🔐 Look for the padlock icon at the top of your browser to confirm SSL encryption
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🌐 URLs will start with “https” instead of “http” — this indicates a secure connection
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✅ Luckspiders is registered with Cybertrust, ensuring that your information remains confidential between your browser and our server
EU Customers:
Due to the Second Payment Services Directive (PSD2), your card issuer may require verification. You may be redirected to a dedicated page or asked to authorize payment via your mobile device 📱. Once verified, you will return to www.luckspiders.com.
Product Description
DETAILED OVERVIEW
The Antminer T21 190T is one of Bitmain’s newest-generation Bitcoin miners, designed to deliver powerful performance with excellent long-term stability. This model provides a solid 190TH/s hashrate, making it an ideal choice for miners looking to expand their BTC mining operations with reliable, energy-efficient hardware. Available directly in North America, this T21 unit allows buyers to enjoy faster delivery, lower shipping costs, and no import delays. Its efficient power consumption and durable build make it suitable for home miners, hosting providers, and large-scale mining farms.
Whether purchased as new or used, the Antminer T21 190T offers a strong balance of performance, cost efficiency, and trusted Bitmain quality—perfect for miners seeking a high-hashrate BTC solution ready for deployment in the USA/Canada region.
SPECIFICATIONS
| Manufacturer | Bitmain |
|---|---|
| Model | T21 |
| Size w/o | 400 x 195 x 290mm |
| Weight Net | 16400g |
| Noise Level | 75db |
| Voltage | 110-240V |
| Power | 16400W |
| Fan(s) | 2 |
| Temperature | 5 – 40 °C |
| Humidity | 10 – 90 % |
