StarTech.com 24in Internal USB Motherboard Header to Serial RS232 Adapter. Host interface: IDC, Output interface: Serial, Serial interface type: RS-232. Product colour: Black, Green, Silver, Certification: Microsoft WHQL, CE, FCC. Chipset: FTDI - FT232RL, Baud rate: 115.2 Kbit/s, FIFO (First In, First Out): 256 B. Windows operating systems supported: Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64,..., Mac operating systems supported: Mac OS X 13.0 Ventura, Server operating systems supported: Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows.... Width: 123 mm, Depth: 45 mm, Height: 12 mm