StarTech.com 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA Compliant - Level-4 ESD Protection. Host interface: PCIe, Output interface: Serial, Expansion card standard: PCIe 2.0. Product colour: Black. Chipset: ASIX - AX99100, Baud rate: 921.6 Kbit/s, FIFO (First In, First Out): 256 B. Windows operating systems supported: Windows 11 Enterprise x64, Windows 7 Professional x64, Windows 8.1 Pro, Windows 10, Windows 11..., Server operating systems supported: Windows Server 2016, Windows Server 2019, Windows Server 2022. Width: 102 mm, Depth: 105 mm, Height: 16 mm