If a product stops operating within this specific warranty time, the product can be:
Warranty does not cover defects or malfunctions caused by accidents, misuse, abuse, catastrophes, improper maintenance or inadequate installation – not following operating instructions (including failure to heed warnings) or use with equipment with which it is not intended to be used.
Products that are purchased from us have to be returned according to our RMA procedure 
Customers are only allowed to return products as a result of the product being defective, due to order assembly or manufacturing fault.
Products should be returned to our designated location within 30 days of receiving your Returns Merchandise Authorization (RMA) form.
Devices sent to warranty without prior approval from our representatives by unilateral decision might not be processed and returned to the sender.
Warranty is not applicable for supplementary product equipment (i. e. PSU, power cables, antennas) unless the accessory is defective on arrival.
More information on what is RMA.