Want to transform your PC into a reliable, all-around companion capable of handling any situation or challenging task? When you need it, there's no guarantee you'll find it right away. That's why you should get it now and gain "peace of mind." This is a PCI interface board for adding RS-232C serial ports to PC/AT compatible machines. It can be used for connecting to older peripherals, development, debugging, and other purposes. Installation and configuration of this board require a certain level of knowledge of the internal structure of a computer. Modern computers primarily use USB and other interfaces for fast data transfer, and RS-232C terminals (ports), an older standard, are rarely included. However, RS-232C is still actively used as a standard connection method for legacy devices and certain industrial and control equipment. This PCI board instantly adds "two COM ports" to your PC. ・Sudden equipment compatibility If you need an RS-232C connection in an unexpected situation, this board allows you to respond immediately. ・Effective use of legacy equipment You can continue to use expensive measuring instruments and control devices that you've used for many years with your latest PC. ・Ensuring high-speed, stable communication Many products are equipped with high-speed baud rates and FIFO buffers. It provides a more stable and reliable connection than USB conversion adapters, making it less likely to lose communication data.