Multiport Serial Adapters

Add 16 RS232 serial ports (DB9) to your low or full-profile computer, through a PCI Express slot - 16-Port PCI Express Serial Card - Low-Profile - High-speed PCIe serial card with 16 DB9 RS232 Ports (up to 921.6 Kbps) - Multiport serial adapter card

Add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot - pcie rs485 - pci express rs485 - pcie rs485 - pci express rs422 - pcie rs422

Add 4 RS232 serial ports to any PC using a single PCI Express expansion slot - pci express serial card - pci-e serial card - pci express RS232 - rs232 card - pci serial adapter

Add Four RS232 Serial Ports to an Embedded System through a mini PCI Express Slot - mini pcie serial card - 4 port rs232 - 4 port serial adapter - 4 port serial pci express mini card - pci express mini card db9

PCI-X - 4 x DB-9 Male RS-232 Serial - Plug-in Card

4 port PCI Express RS232 serial controller card w/16950 UART/ASIX AX99100 - Bi-directional speeds 921.6Kbps/port | 256 byte FIFO | 9th data bit - Pin 9 pwr out 5v/12v/none w/up to 2A total - Std bracket (low profile incl); Breakout cable - Win/Linux