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

STARTECH

STARTECH 2S232422485-PC-CARD 2-Port Serial PCIe Card

SKU CH-HAXM-RPB9F MPN 2S232422485-PC-CARD

Adds two RS232/422/485 serial ports via PCIe with 15 kV ESD protection and 921.6 Kbps throughput

  • Product typeComputer Accessories
  • Product weight0.33
  • Adds two RS-232/422/485 ports via PCIe
  • 15 kV Level-4 ESD protection guards connected gear
  • Up to 921.6 Kbps for fast serial links
  • Low-profile brackets fit compact chassis
  • RoHS and TAA compliant for regulated projects

Dual-Port Serial PCIe Card for Industrial

The StarTech 2S232422485-PC-CARD adds two RS232, RS422 and RS485 serial ports through a single PCI Express slot. It targets engineers and integrators who need to link legacy industrial equipment, point-of-sale hardware or scientific instruments to modern PCs. The board provides a direct hardware path for serial communication without relying on USB-to-serial converters.

Passive Cooling and Low Power Consumption

The card operates without a fan, drawing power solely from the PCIe bus for silent running in noise-sensitive environments. Level-4 ESD protection guards each port against 15 kV air-gap and contact discharge events. A wide operating temperature and humidity range supports continuous duty in industrial cabinets or server rooms.

Low-Profile Brackets and DB9 Connectors

Two standard DB9 male connectors face the rear bracket for secure screw-on cabling. Both full-height and low-profile brackets are included to fit compact or full-size chassis. RoHS and TAA compliance confirms the assembly meets regulated procurement requirements for government and enterprise projects.

How it compares

Measured against everything we stock in Cable Modems & Gateway Routers, at today’s prices. Recalculated every night.

Price $77.99
Cheaper than about 66% of the 122 comparable items (median $120.99).

Specifications

Product
Brand nameStarTech
Model name2S232422485-PC-CARD
Product typeComputer Accessories
Size & build
Shipping weight0.15 kg
Package size176 × 144 × 35 mm

Questions about this item

How do I install the 2S232422485-PC-CARD and which bracket step is often missed?

Insert the card into an open PCIe slot, secure it, then swap the standard bracket for the included low-profile bracket if your chassis requires it; many builders forget the bracket swap and cannot close the case.

What maintenance or replacement will the dual-port serial card need over time?

The on-board ESD protection rated at 15KV air-gap and contact discharge is sacrificial; after repeated surge events the protection degrades and the card should be replaced to keep connected equipment safe.

What limit appears first when the card runs at sustained 921.6 Kbps throughput?

Continuous maximum-rate traffic can push the controller into its thermal envelope, causing the driver to throttle the UART clock and reduce effective throughput until the card cools.

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