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Green PCI card with two DB9 serial ports on bracket

Syba

Syba SD-PCI-2S PCI to Serial 2-port expansion card

SKU CH-QB0W-8N9RH MPN SD-PCI-2S

Adds two DB9 serial ports to a PCI slot, auto-configuring IRQ and I/O for Windows 98SE through XP, Linux and DOS

  • External connectors2x DB9 serial port connectors
  • Supported operating systemsWindows 98SE/ME/2000/XP/NT4.0, Linux & DOS Operating System
  • Product typePCI to Serial Port Card
  • Key featuresPlug & Play - Automatically selects IRQ and I/O address,Comp
  • Product weight0.4
  • In the boxSyba PCI to Serial 2-port host controller card User's manual
  • Adds two DB9 serial ports to PCI systems
  • Plug & Play auto-configures IRQ and I/O address
  • 16C550 UART with 16 byte FIFO buffer
  • PCI 2.1 compliant up to 1Mbps data rate
  • Supports Windows 98SE through XP, Linux and DOS

Add serial ports to PCI systems

The Syba SD-PCI-2S adds two DB9 serial connectors to any computer with an available PCI slot. It is built for users who still rely on legacy serial equipment such as industrial controllers, barcode scanners or older networking gear. The card uses the NM9835CV controller and is supplied with a driver disc and manual.

Suits legacy hardware.

This card suits technicians maintaining older Windows or Linux machines that lack native serial ports. It supports Windows 98SE through XP, NT 4.0, Linux and DOS. Builders who need USB, Ethernet or faster data rates should look at a different interface card.

Two DB9 ports with 16C550-compatible UART

The card provides two external DB9 ports driven by a 16C550-compatible UART with 16-byte FIFO buffers. It complies with PCI Specification Revision 2.1 and delivers data rates up to 1 Mbps.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 90% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameSYBA
Model nameSD-PCI-2S
Product typePCI to Serial Port Card
Ports & slots
External connectors2x DB9 serial port connectors
Size & build
Shipping weight0.08 kg
Package size183 × 147 × 41 mm
Compatibility
Supported operating systemsWindows 98SE/ME/2000/XP/NT4.0, Linux & DOS Operating System
In the box
In the boxSyba PCI to Serial 2-port host controller card
User's manual
Software driver disc x 1

Questions about this item

What limits the sustained data rate of the NM9835CV controller on this card?

The NM9835CV chipset provides fast data rates up to 1Mbps with a 16 byte transmit-receive FIFO compatible with the standard 16C550 UART.

How much power does the SD-PCI-2S draw and does it add heat or noise during all-day operation?

The card draws power from the PCI slot with no fan or external connector, so it runs silently and adds negligible heat inside the case.

Which operating system must already be installed for the Plug & Play installation to work automatically?

Supported systems include Windows 98SE, ME, 2000, XP, NT4.0, Linux and DOS, each automatically selecting IRQ and I/O address.

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