Buy with Confidence: With Monoprice's Lifetime Warranty on all Cables, you can rest assured we stand behind our products and our customers.You can depend on Monoprice to have the cables you will need for this type of connection! This cable features a female DE-9 (DB-9) socket on one end and a male DB-25 plug on the other. The 9 pins of the DE-9 connector are wired to 9 of the pins on the DB-25 connectorWhile legacy PCs (post IBM PC/AT) typically use 9-pin RS-232 plugs external modems are usually equipped with 25-pin RS-232 socketsQuality at a Fair Price: Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.