This PCI Express serial card adds 16 high-speed RS232 ports to your standard or low-profile desktop or server PC. This lets you maximize the number of available DB9 RS232 ports that are available for connecting your serial-based devices and equipment, while using only a single PCI Express (PCIe) slot. It’s the perfect solution for adding the serial ports you need, even if your desktop PC or server only has a limited number of PCIe expansion slots. Add 16 RS232 ports through one PCIe slot You can install the serial card to add 16 high-performance DB9 RS232 serial ports from a single PCIe slot. With two breakout cables of 8 ports each, the PCIe serial card maximizes the density of DB9 RS232 ports on a server or desktop computer. It’s ideal for system upgrades in a wide range of applications, including manufacturing equipment, POS equipment, security devices such as surveillance cameras, and environment or building control systems. The serial card is compliant with PCI Express 1.0a specification, and it's compatible with 1x, 2x, 4x, 8x and 16x PCI Express slots. High-speed serial communication The PCIe serial card delivers high-performance, high-speed serial communication, with support for data transfer rates of up to 921.6 Kbps. Easy installation The serial card is easy to install and configure, and compatible with a broad range of Windows® and Linux® operating systems. The card features IRQ sharing and supports plug-and-play serial device connections, which makes it convenient and easy to connect serial devices. It includes a low-profile bracket making it compatible with both full profile and low profile PC chassis slots. The PEX16S550LP is backed by a StarTech.com lifetime warranty and free lifetime technical support.