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Monoprice 100187 2-Port Serial PCI Card - DB9, 32-Bit — main product image
Monoprice

Monoprice 100187 2-Port Serial PCI Card - DB9, 32-Bit

★★★★★4.5 (2 reviews)

Expand Your Connectivity with Ease Introducing the Monoprice NetMos 2-Port Serial Card. Seamlessly add two DB9 serial ports to your desktop PC, enabling the connection of a variety of legacy serial devices. Monoprice is committed to continually enhancing its product offerings to deliver top-quali...

$13.03*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Expand Your Connectivity with Ease

Introducing the Monoprice NetMos 2-Port Serial Card. Seamlessly add two DB9 serial ports to your desktop PC, enabling the connection of a variety of legacy serial devices. Monoprice is committed to continually enhancing its product offerings to deliver top-quality products to its customers.

  • Interface: PCI 32-Bit
  • Ports: 2 x DB9 Serial Ports
  • Compatibility: Designed to connect legacy serial devices
  • Brand: Monoprice
  • Model: 100187

Key Features

Dual DB9 Serial Port PCI Expansion Card

Add 2 DB9 serial ports to your desktop computer to connect legacy serial devices

Monoprice continually strives to improve its product line to bring our customers the best products available

Therefore changes may be made to listed specifications without prior notice

Item received may not match photo or specs shown

Specifications

Brand
Monoprice
Ports
2 x DB9 Serial
Interface
32-Bit PCI Card
Function
Expansion Card

Pros & Cons

👍 Pros

  • Adds two DB9 serial ports to a desktop computer, enabling connectivity for legacy serial devices.
  • Utilizes a 32-Bit PCI expansion card interface, ensuring broad compatibility with older desktop systems.
  • Provides a practical solution for systems requiring serial communication without built-in ports.
  • The dual port configuration allows for connecting two different serial devices simultaneously.
  • Designed as a straightforward component, fulfilling a specific need for serial port expansion.

👎 Cons

  • The 32-Bit PCI interface is an older standard, making it incompatible with modern PCI Express (PCIe) slots found in newer motherboards.
  • The product explicitly states "Item received may not match photo or specs shown," which can cause uncertainty for buyers.
  • No information is provided on driver support for modern operating systems (e.g., Windows 10/11, current Linux distributions).
  • DB9 serial ports are primarily for legacy devices, limiting the card's utility for contemporary peripherals.
  • Installation requires opening the computer case and occupying an available PCI slot, which some users may find inconvenient.

Frequently Asked Questions

No, this is a 32-Bit PCI expansion card and is only compatible with standard PCI slots, not the newer PCI Express (PCIe) slots.
The product description specifies its hardware features but does not provide information on compatible operating systems or driver availability.
This card provides DB9 serial ports, which are primarily for connecting legacy serial devices and are not designed for modern USB peripherals.
The product description notes that "Item received may not match photo or specs shown," implying potential variations, and any discrepancies should be addressed with the seller.
While it adds serial ports, typically PCI expansion cards require specific drivers for full functionality, though this is not explicitly stated.
PCI serial cards generally allow for COM port number configuration, but specific details on software or settings are not provided in the features.

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