Specification Cable length 3 5 Ft 1MConnecter input USB1 1 portConnecter output 9 pin RS 232 interfaceFeatures USB 1 1 2 0 compliantOver 1 Mbps data transfer rate This USB Converter Cable also supports remote wake up and power management Provide a simple and easy way to connect universal serial bus and serial port interface Users have the capability to utilize the peripheral with plugplay swap function with this USB Converting Cord System requirements PC IBM PC 486DX 4 100mHz CPU or higher or compatible system available USB port Windows 98 Me 2000 XP Apple Computer power G3 or G4 CPU or higher or compatible system available USB port Mac OS 8 6 or higher Please Note It does not work for Win7 win8 Vista 64bit system It does work for Win7 win8 Vista 32bit system This 3 5 Feet USB to RS 232 Converter Cable is designed for ideal connections to a cellular phone digital camera modems orISND terminal adaptor Package Included 3 x USB To RS232 Serial DB 9 PIN COM Port Converter cable