The warranty only applies to the initial purchaser who purchased the device straight from NiceAsicMiner. Once the miner is resold, guarantee coverage becomes the accountability from the re-vendor. If defective on arrival, the client will get a complete refund promptly and no return from the miner is necessary. Enter https://batchminer.com/product/bitmain-antminer-dr5-decred-34th-s-second-hand/