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 - 4 Port PCI Express PCIe Serial Combo Card - 4 port (2 x RS232, 2 x RS422/485) serial combo card - PCI Express RS485 / PCIe RS485 / PCI Express RS422 / PCIe RS422 serial combo card - Dual Profile PCIe serial card adapter with breakout cable - RS232 data transfer rates up to 460 Kbps - PCIe serial combo card supports 2-Wire / 4-Wire RS485 modes - Compliant with PCI-Express Specification 1.0a

PCI Express x1 - 4 x DB-9 Male RS-232 Serial Via Cable - Plug-in Card

Serial adapter - Mini PCI Express - RS-232 x 4

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