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Green PCB half-height PCIe card with two DB9 serial ports and a fan-out cable

Syba

Syba SI-PEX15043 2-port RS232 PCIe expansion card

SKU CH-2RJF-7FEPD MPN SI-PEX15043

Adds two RS-232 serial ports via PCIe 2.0 using an Exar XR17V358 controller with DB9 panel-mount adapters included

  • Supported operating systemsWindows 8 Windows 7 Vista XP Windows Server 2003, 2008, 2012
  • Product typePCI Express to Serial Port Card
  • Key featuresPCIe 2.0 Gen 1 Compliant Exar Chipset: XR17V358 x1 Link, Dua
  • Product dimensions2.25 in × 7 in × 12 in
  • Product weight0.75 lb (0.34 kg)
  • In the boxx1 PCI-Express Serial Card x1 2-port DB9 Fan-out Cable x2 DB
  • Two RS-232 ports added via PCIe 2.0 x1 link
  • Exar XR17V358 controller delivers 2.5 Gbps per direction
  • 16C550 UART compatible for industrial equipment
  • Solderless DB9 field terminators enable custom cables
  • Supports Windows 7 through Server 2012 and Linux 2.6.27+

Target interface and use

The Syba SI-PEX15043 adds two RS232 serial ports through a PCIe 2.0 x1 slot using the Exar XR17V358 controller. It is compatible with the 16C550 UART standard for industrial machines, POS terminals, external modems and legacy peripherals. Drivers cover Windows XP through Server 2012 and Linux kernels from 2.6.27 onward.

Passive thermals and power

The card has no active cooling and draws minimal power from the PCIe bus during normal operation. With no fan or moving parts it adds zero acoustic noise to the system. Typical serial signalling at 2.5 Gbps per direction keeps heat output negligible inside any standard chassis.

Sustained load behaviour

Under continuous multi-port traffic the Exar XR17V358 maintains dual-simplex throughput at the full 2.5 Gbps link rate without throttling. The solderless DB9 field-terminator adapters allow custom cable lengths that preserve signal integrity over long runs in industrial environments.

How it compares

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

Price $35.99
Pricier than about 58% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameSYBA
Model nameSI-PEX15043
Product typePCI Express to Serial Port Card
Ports & slots
External USB portsNo
Size & build
Product dimensions2.25 in × 7 in × 12 in
Product weight0.75 lb (0.34 kg)
Shipping weight0.39 kg
Package size307 × 183 × 61 mm
Compatibility
Supported operating systemsWindows 8
Windows 7
Vista
XP
Windows Server 2003, 2008, 2012
Linux 2.6.27, 2.6.31, 2.6.32, 3.x.x and newer
In the box
In the boxx1 PCI-Express Serial Card
x1 2-port DB9 Fan-out Cable
x2 DB9 Female Panel Mountable Field Terminator Adapters
x1 User Manual
x1 Driver CD

Questions about this item

How do I install the Syba SI-PEX15043 card and its 2-port DB9 fan-out cable, and what step do people often get wrong?

Insert the card into a PCIe x1 slot, secure the bracket, then connect the supplied 2-port DB9 fan-out cable to the card's internal header before attaching the DB9 female panel mountable field terminator adapters; the step often missed is plugging the fan-out cable into the card first.

What maintenance or replacement will the Syba SI-PEX15043 need later?

The card uses an Exar XR17V358 chipset and has no moving parts or batteries; the only items that may need replacement over time are the DB9 female panel mountable field terminator adapters or the 2-port DB9 fan-out cable if connectors wear out.

What limit appears first on the Syba SI-PEX15043 under sustained use?

Each port runs over a PCIe 2.0 x1 link at 2.5 Gbps per direction, so the bus bandwidth is the first ceiling you hit during continuous high-throughput serial traffic.

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