The PEX4S553 4-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART lets you add 4 RS232 (DB9) serial ports, using a single PCI Express expansion slot.
Based on a native single-chip...
Dual Port Gigabit PCI Express Server Network Adapter Card - PCIe Gigabit NIC - 1 Gbps Dual Port Server Adapter - Dual Port Network Card - 2 Port Ethernet Card - PCIe Dual NIC Card
The PEX2S553LP low profile/half-height PCI Express Serial Card turns a PCI Express slot into two RS232 (DB9) serial connections.
The card is constructed using a native single chip design that lets...
Add eight RS-232 DB9 serial ports to your desktop computer, through two PCIe expansion card slots. This PCI express serial card, with two breakout cables, provides you with multiple ports to connect...