This PCI-E expansion card provides two high-performance serial RS232 ports, enabling seamless integration of serial devices and legacy equipment into modern computer systems Powered by the ASIX/AX99100 chipset, this card ensures stable and dependable serial communication for a wide range of industrial and commercial applications Measuring a compact 65.4 x 60 x 16mm, this expansion card fits neatly into your desktop or industrial PC, while its robust construction allows it to withstand demanding environments Designed to operate in a temperature range of 0 to 50℃ and a relative humidity of 10% to 90% (non-condensing), this card can be used in a variety of settings, from office spaces to industrial facilities The PCI-E to RS232 serial port expansion card is compatible with a broad range of operating systems, including Windows 10, 8/8.1, 7, Vista, XP, and Windows Server 2012, 2008 R2, and 2003, as well as Linux 2.4.x and later (tested up to 3.5) Specifications: Model: TXB074 Chipset: ASIX/AX99100 Ports: 2 x Serial Interface: PCI Express 1x Slot Dimensions: 65.4 x 60 x 16mm Operating Temperature: 0 to 50℃ Storage Temperature: 0 to 80℃ Relative Humidity: 10% to 90% (non-condensing), 5% to 90% (non-condensing) for storage Supported Operating Systems: Windows 10, 8/8.1, 7, Vista, XP (32/64-bit) Windows Server 2012, 2008 R2, 2003 (32/64-bit) Linux 2.4.x and later (tested up to 3.5)