magnaroute Fan Kit compatible with Dell PowerConnect 2748, 5448 Wires are properly trimmed and crimped - ready to install. We use only brand new top tier fans (unless noted in the product description) from Delta, Sunon, NMB, and PSC. Guaranteed to meet or exceed original manufacturer airflow and pressure requirements. Please refer to the product description below and verify compatibility with the specific model of the switch you have to ensure you are ordering the correct item for your needs. Product description is made by the manufacturer and quality of materials can only be guaranteed when purchasing from the manufacturer's (magnaroute LLC) offer on Amazon.