StarTech Model ICUSB2321FIS 8 ft. 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation M-M Type: Others Color: Black Connector Number: 2 Connector Detail: Connector Type(s): 1 - DB-9 (9 pin) Male Connector Type(s): 1 - USB A (4 pin) Male Specifications: Enclosure Type: Plastic Isolation: 2500 Vrms Microsoft WHQL Certified: Yes Serial Protocol: RS-232 Surge Protection: 500W Bi-directional circuits Max Baud Rate: 921.6 Kbps Data Bits: 7, 8 Stop Bits: 1, 2 Parity: None, Odd, Even, Mark, Space Power Adapter Included: USB Powered Chipset ID: FTDI - FT232RL OS Compatibility: Windows 7 (32/64bit)/ Vista(32/64)/ XP(32/64)/ 2000/ CE(4.2+) Windows Server 2008 R2/ 2003(32/64) Mac OS 9.x, 10.x Linux