6ft DB9 female to DB25 male modem cable connects an external modem to the PC's DB9 serial port. Each modem serial cable is designed for long-lasting integrity, regardless of modem baud rates. Plus the cable is fully molded and foil shielded for EMI/RFI protection from surrounding office equipment and fluorescent lights. Thumbscrew connectors provide a fast, easy connection every time. The hoods have long, easy-to-grip, slotted thumbscrews for neat, easy and durable connections.