Expand your system's connectivity with this versatile 4-port RS232 serial PCIe expansion card. Featuring the reliable AX99100 chipset, this card delivers stable performance and seamless communication through its DB9 ports. The PCI Express x1 interface ensures compatibility with various PCIe slots (x1, x4, x8, x16), making it a flexible solution for your connectivity needs. With extensive operating system support ranging from to Kernel 2.6.15 and beyond, this card adapts to diverse computing environments. The card's robust design supports operating temperatures from -40 to 85°C, while integrated PCI power management 1.2 compliance optimizes system efficiency. for industrial applications, device connections, or expanding serial port capabilities, this 4.7-inch card combines reliability with versatile connectivity options. The signal enhancement feature ensures stable data transmission, while remote wake-up capability adds convenience to system management.