This Moxa CP-118EL-A PCI Express x1 serial board offers 8 ports for RS-232 connectivity. It is compatible with computers and tablets using the RS-232 interface/add-on card. This port expansion card is ideal for computer components and parts, making it a great addition to any networking setup. Its small form factor allows for easy installation and integration into your existing system. Trust the Moxa brand for reliable and efficient connectivity solutions.