Please refer to the FAQ as follows if you have any question about our products
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If the FAQ does not resolve your problem, please contact our sales person you connected with when you bought our product.
nnosilicon A4 Dominator have 45 days parts Warranty (Counting upon miner arrival, Free repair services).
If this happens, services of miner maintenance will be charged. For the specific procedures, please refer to the post-sales process.