Rosewill Dual Serial Ports PCI Card Components RC-301 PCI to Serial Port Card External Ports: 2 x 9 pins serial connectors Data Transfer Rate: 115200bps Operating Systems Supported: Windows 2000, Windows XP/2003/Vista 32/64 bit, Windows 7 32/64 bit, Windows 8 32/64 bit, Windows 10, Linux Chipset: MOSCHIP MCS9835CV Supports up to 2x 16550 Fast Uart serial port Easy Plug and Play installation Automatically selects IRQ & IO address The Rosewill RC-301 features two 9-pin RS232 serial ports to add additional serial capability to your computer Just connect your computer with serial port devices such as modems easily! The Rosewill RC-301 features a PCI interface compliant with Plug-n-Play