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Green PCI card with two DB9 serial ports and low-profile bracket

coolline

coolline PCI Serial Port Card 2 Ports RS232 COM Converter

SKU CH-D3H1-2JRGP

Adds two RS-232 serial ports via a 32-bit 33 MHz PCI 2.1 card with 16C550 UARTs and 16-byte FIFOs

  • TypeController Card
  • Adds two RS-232 ports for legacy industrial devices
  • PCI 2.1 compliant 32-bit 33 MHz bus interface
  • 16C550 UART with 16-byte FIFO for reliable data
  • Driver support from Windows 2000 through Win 7 64-bit
  • Low-profile bracket included for small-form-factor systems

Industrial RS-232 Expansion

This PCI card adds two DB9 serial ports to a PC, thin client or server through a standard 32-bit 33 MHz PCI slot. It targets engineers and integrators who need reliable RS-232 connectivity for industrial communication or automation equipment. The board uses a 16C550-type UART with 16-byte transmit and receive FIFOs for compatible data handling. Driver support covers Windows 2000 through Windows 7 in both 32 and 64-bit editions as well as Linux.

Low-Profile Plug-and-Play Operation

The card conforms to PCI Specification Revision 2.1 and requires no manual IRQ or I/O address configuration. A low-profile bracket is included for installation in slim chassis where full-height cards cannot fit. Power draw and thermal output are minimal because the controller operates at modest bus speeds without active cooling. The bundled driver CD and user manual simplify first-time setup on supported operating systems.

Sustained Throughput up to 1 Mbyte/s

Under continuous load the dual ports maintain fast data rates up to 1 Mbyte per second thanks to the FIFO buffers and PCI 2.1 compliance. The design avoids the bottlenecks that appear in short-burst testing by keeping both channels fed during long transfers. This makes the adapter suitable for extended logging, machine control or legacy device sessions where steady throughput matters more than peak bursts.

Highlights

  • Adds two RS-232 ports for legacy industrial devices
  • PCI 2.1 compliant 32-bit 33 MHz bus interface
  • 16C550 UART with 16-byte FIFO for reliable data
  • Driver support from Windows 2000 through Win 7 64-bit
  • Low-profile bracket included for small-form-factor systems

Specifications

TypeController Card

Questions about this item

How is the PCI serial card installed, and which bracket mistake do builders make?

Insert the card into a 32-bit 33 MHz PCI slot, secure it, then swap the full-height bracket for the included low-profile bracket if the chassis needs it; the step people miss is fitting the low-profile bracket before closing the case.

What maintenance or replacement will the two DB9 ports need later?

The DB9 connectors are soldered to the board, so no port-level maintenance is expected; only the driver CD or a downloaded driver for Windows 2000, XP, Vista, 7 or Linux may need updating if the OS changes.

What limit appears first under sustained use of the 16C550 UARTs?

Each UART has a 16-byte FIFO, so the first bottleneck is the small buffer size; at high continuous throughput the FIFO fills and the CPU must service interrupts more often, capping practical sustained speed.

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