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Green low-profile PCIe card with single DB-9 male port and full-profile bracket included

STARTECH

STARTECH PEX1S953LP 1 Port RS232 Serial Adapter Card expansion card

SKU CH-ZM7E-BAMT8 MPN PEX1S953LP

Adds an RS232 DB9 serial port through a PCI Express x1 slot, supports data rates up to 921.4Kbps with 256-byte FIFO, and includes low-profile and full-profile brackets

  • External connectors1 x DB-9 (9 pin, D-Sub) Male
  • Internal ports1 x LP4 (4 pin; Large Drive Power) Male Input 1 x PCI Expres
  • Supported operating systemsWindows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.
  • Product typePCI Express to Serial Port Card
  • DetailsBus Type: PCI Express Card Type: Low Profile (SP bracket inc
  • Key featuresAdd RS232 DB9 capabilities without purchasing a new server o
  • Add an RS232 DB9 port via PCI Express x1
  • PCI Express 1.1 compliant to reduce CPU load
  • Low-profile and full-profile brackets included for case fit
  • 4Kbps max data rate with 128-byte FIFO per channel
  • Supports Windows Server 2003 through 2016 and Linux 2.4.x to 2.6.x LTS

PCIe RS232 adapter for legacy serial connectivity

The StarTech PEX1S953LP adds a single DB-9 RS232 port to a desktop or server through a PCI Express x1 slot. It is aimed at IT professionals and industrial users who must connect older serial equipment such as modems, PLCs or console ports to modern systems lacking native COM ports.

PCI Express 1.1 compliance decides slot

The card follows the PCI Express 1.1 specification and fits any x1, x4, x8 or x16 slot. A low-profile bracket is fitted and a full-height bracket is included, so the adapter works in both compact and standard chassis without modification.

921.4 Kbps throughput with 256-byte FIFO buffer

The integrated 16950-class UART delivers data rates up to 921.4 Kbps and provides a 256-byte FIFO for each transmitter and receiver. This headroom handles typical industrial and console workloads, while very high-speed or multi-port applications would require additional cards.

How it compares

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

Price $48.99
Pricier than about 70% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameStarTech.com
Model namePEX1S953LP
Product typePCI Express to Serial Port Card
Ports & slots
External connectors1 x DB-9 (9 pin, D-Sub) Male
Internal ports1 x LP4 (4 pin; Large Drive Power) Male Input
1 x PCI Express x1 Male
Size & build
Product dimensions0.7 in × 2.6 in × 3.9 in
Product weight1.6 oz
Shipping weight0.12 kg
Package size170 × 142 × 30 mm
Compatibility
Supported operating systemsWindows Server 2003, 2008 R2, 2012, 2012 R2, 2016
Linux 2.4.x to 2.6.x LTS Versions only
In the box
In the box1 x PCIe Serial Card
1 x Full-Profile Bracket
1 x User Manual

Questions about this item

What does the 921.4 Kbps maximum data rate mean when the card is installed in a system?

It provides a high-speed RS232 connection capable of transferring data at up to 921.4 Kbps, suitable for demanding serial devices.

How does the PCI Express 1.1 interface affect the card's performance?

The PCI Express 1.1 compliance ensures reliable performance by reducing the load applied to the CPU during serial data transfers.

What physical space and brackets are required to mount this low-profile card?

The card measures .70 x 2.60 x 3.90 inches and includes both a low-profile bracket and a full-profile bracket for flexible case integration.

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