The AC to DC Adapter - 110v AC to 12v DC 4-pin molex connector is perfect for those "outside the box" power and cooling needs. With this device you can power 12V fans with 4-pin molex connector or a hard disk with 4-pin molex connection directly from wall power source without the need for a ATX power supply. Now you can easily power all such devices without having reach into a computer case. We also recommend this device for home theater cooling needs and overheating cabinets that are in need of an exhaust fan. Never use this product to power any device whose power rating exceeds the maximum voltage and wattage listed. Otherwise your device can be damaged and no warranty can be claimed for such damage. Never open or modify this product, and doing so will void the warranty. NO FULL REFUNDS OR RETURNS to customers who decided they simply do not want the product anymore. There will be a 15% re-stocking fee for returned or refunded products. Returned retail packaged product opened by the customer is non refundable. We will replace any Dead-On-Arrival (DOA) item if you contact us within 2 weeks from the day you receive the merchandise. There is a Warranty of one year after the product is received. Warranty is VOID after one year or if product is damaged by any user misuse.