SF Cable, 6 ft USB to Serial RS232 DB9 Adapter with Screw (Prolific Chipset) Cable Length: 6 ft cable. Side Connectors: Male Thumbscrews Supports remote wake-up and power management Supports automatic handshake mode. No IRQs, no IRQ conflicts Provides a 96 byte buffer for each upstream and downstream data transfer Compatible with USB Specification v1.1(0) & USB CDC v1.1, USB 2.0