StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 Card - 16950 UART - Expansion Card - Windows/Linux. Host interface: PCIe, Output interface: Serial, Expansion card form factor: Full-height / Low-profile. Product colour: Green, Mean time between failures (MTBF): 214358 h, Certification: CE, FCC, Microsoft WHQL. Chipset: Asix AX99100, Baud rate: 921.6 Kbit/s, FIFO (First In, First Out): 256 B. Windows operating systems supported: Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10..., Server operating systems supported: Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows.... Width: 63 mm, Depth: 75 mm, Height: 15 mm