The C28 connector has one end that is a MagSafe-compatible connector for Apple MacBook computers made before mid-2012. The other end is a 5.5 x 2.5mm female jack that can plug into a 5.5 x 2.5mm male connector. In other words, this CNT-C28 connector can convert a 5.5 x 2.5mm male power connector to a MagSafe-compatible power connector.
