USB 2.0 to RS232 Serial DB9 Adapter - Supports Windows 10, 8, 7, Vista, XP, 2000, 98, Linux and Mac - Built with FTDI Chipset Supports Windows 10, 8, 7, Vista, XP, 2000, 98, Mac MAC OS8 or higher, Linux 2.4.0 and later, OpenBSD 2.9 and later & FreeBSD 4.7 and later. Installed as a standard Windows COM ports, Full RS-232 modem control signals, RS-232 data signals; TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND The USB Serial Adapter provides instant connectivity with modems, ISDN terminal adapter, PDA, bar code scanner, label printer, and devices with DB9 SERIAL ports Powered by USB port. Include a 32" long USB extension cable inside the package