Serial I/O Cards

Add 4 RS232 serial ports to your standard or small form factor computer through a PCI Express expansion slot 4 port pcie serial card 4 port rs232 card 4 port serial adapter 4 port pci express serial card pci express db9 serial card.

The PEX4S232485 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 lets you add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot. This PCI express serial card is a single card solution that...

The PEX4S553B Serial PCI Express card lets you add four RS232 serial ports using a single PCIe expansion slot. Includes both standard and low profile installation brackets features native PCIe single chip design.