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Green PCIe x1 card with DB25 parallel and DB9 serial ports

STARTECH

STARTECH PEX1S1P950 PCIe expansion card with DB25 and DB9 ports

SKU CH-NBMP-SPBQW MPN PEX1S1P950

Adds a DB25 parallel port and a DB9 RS232 serial port through a PCI Express x1 2.0 slot

  • External connectorsDB-25 (25 pin, D-Sub) DB-9 (9 pin, D-Sub)
  • Supported standardsPCI Express x1
  • Product typePCIe Card with Serial and Parallel Port
  • Key featuresPCIe Card with Serial and Parallel Port Add a DB25 parallel
  • Adds legacy DB25 parallel and DB9 serial ports via PCIe x1 slot
  • Parallel port reaches 2.5 Mbps with SPP, Byte and ECP modes
  • Serial port delivers 921.6 Kbps through 16C950 UART
  • IEEE 1284 compliant for broad printer and scanner support
  • Works with Windows 7 onward, Server 2003 onward and Linux 2.6+

Legacy I/O for modern systems

The PEX1S1P950 adds one DB25 parallel port and one DB9 serial port to a desktop through a single PCI Express x1 2.0 slot. It targets technicians and industrial users who still drive printers, scanners, plotters or RS232 equipment that lack USB or native motherboard headers.

Full-profile bracket with standard D-Sub connectors

The card uses a full-height bracket so it fits typical tower chassis without a low-profile swap. Both DB25 and DB9 ports are mounted directly on the bracket, giving secure screw-down connections that resist vibration in rack or bench environments. The Asix AX99100 controller handles the parallel interface while a 16C950 UART drives the serial side.

Replaces the PEX1S1P952

This model supersedes the earlier 952 card, raising the DB25 maximum to 2.5 Mbps and keeping the DB9 at 921.6 Kbps. The upgrade is worthwhile when legacy software demands ECP or EPP parallel modes under IEEE 1284, or when a 16C950-compatible UART is required for timing-sensitive serial gear. It is not suited for builds that need more than one legacy port of each type.

How it compares

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

Price $50.99
Pricier than about 71% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameStarTech.com
Model namePEX1S1P950
Product typePCIe Card with Serial and Parallel Port
Connectivity
Supported standardsPCI Express x1
Ports & slots
External connectorsDB-25 (25 pin, D-Sub)
DB-9 (9 pin, D-Sub)
Size & build
Shipping weight0.14 kg
Package size170 × 142 × 30 mm

Questions about this item

What PCIe standard does the PEX1S1P950 use and what bandwidth does it provide?

The card plugs into a PCI Express x1 2.0 slot and follows the PCI-e Base Spec Rev 1.1, giving 2.5 Gbps per lane.

What physical slot and bracket size does this card require?

It needs one full-profile PCIe x1 2.0 slot and fits a standard DB-25 and DB-9 bracket cut-out.

How is the card installed and which step is often missed?

Power off the PC, insert the card into a free PCIe x1 slot, secure the bracket screw, then install the Windows 7+, Server 2003+ or Linux 2.6+ drivers before connecting legacy devices.

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