StarTech.com 4 Port RS232 PCI Express Serial Card w/ Breakout Cable. Host interface: PCIe, Output interface: Serial, Serial interface type: RS-232. Product colour: Black, Certification: REACH, CE. Chipset: ASIX Moschip MCS9904CV-AA, Baud rate: 230.4 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..., Mac operating systems supported: Mac OS X 10.10 Yosemite, Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS..., Server operating systems supported: Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows.... Width: 12 mm, Depth: 80.5 mm, Height: 68 mm