ABLIC Inc. IC REG CTRLR BUCK SOT23-5 S-8521A28MC-AXNT2U

The S-8521A28MC-AXNT2U is a product code or model number, likely for an electronic device or component. However, as it appears to be a unique identifier, specific information about the product cannot be determined without further context. It's possible that this code may refer to a specific type of computer hardware, such as a motherboard or graphics card, or perhaps even a consumer electronics device like a television or sound system. Additional research or information from the manufacturer would be necessary to provide more details.