DB-9 (9 pin, D-Sub) and USB 2.0 Type-A (4 pin, 480Mbps) end connectors make this cable ideal for connecting various serial RS232 (DB9) devices to a computer Length of 1m (3ft.) provides convenience and flexibility Up to 921.6Kbps makes this cable suitable for tasks that require fast communication or high-speed data transfer between devices 512 Byte FIFO enables efficient data transfer between the devices with different interfaces COM Port Retention improves compatibility and reliability when connecting legacy serial devices to modern computers Prolific IC improves performance and functionality Screw-lock nut helps keep the cable secure