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StarTech.com PEX1S953LP 1 Port RS232 Serial Adapter Card with 16950 UART - PCI Express Serial Port Card - 921.4Kbps - Windows & Linux Compatible
- UPGRADED CAPABILITIES: Add an RS232 DB9 connection to the PCIe slot of your server
- INDUSTRY COMPLIANT: RS232 serial port is PCI Express 1.1 compliant ensuring reliability by reducing the load applied to the CPU
- MAXIMUM COMPATIBILITY: Easily install the RS232 Serial Adapter Card with a compatible low-profile or full-profile bracket
- OPTIMAL TECHNOLOGY: RS232 serial port provides high-speed data transfer rates of up-to 921.4Kbps and supports 128-byte depth FIFO per transmitter and receiver
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Overview
Specs
Reviews (1)
1 Port RS232 Serial Adapter Card adds an RS232 DB9 connection through PCI Expres
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): Lifetime
- Limited Warranty period (labor): Lifetime
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.ca's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-265-1844
- Support Email: support@startech.com
- Support Website
- View other products from STARTECH
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The StarTech.com PEX1S953LP is a PCIe x1 expansion card that adds one RS-232 DB9 serial port, suited to desktop or server users connecting serial peripherals such as printers, card readers, PIN pads, or modems.
Recommended For
- Retail and kiosk operators who need to connect one RS-232 device—such as a card reader, receipt printer, or PIN pad—to a desktop or server with an available PCIe slot.
- Industrial automation technicians connecting one RS-232 control or monitoring device to a workstation or server used for PLC, factory-control, or sensor tasks.
- IT staff or system builders adding a built-in DB-9 serial port to a PCIe-equipped desktop or server for managing or communicating with serial hardware.
- Workstation users who need to connect one RS-232 printer, modem, scanner, or other legacy serial peripheral and can install an internal PCIe card.
- Users with serial equipment that requires 5V or 12V power on DB-9 pin 9, provided they set the card’s jumper correctly and connect the required power source.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Adding one RS-232 serial connection to a PCI Express-equipped computer or server running a supported operating system |
| Serial Interface And Ports | One integrated male DB-9 RS-232 port, with a PCI Express x1 host connection and LP4 power input |
| Serial Configuration And Performance | Up to 921.6 Kbps; supports 5–9 data bits, 1, 1.5, or 2 stop bits, none/odd/even/space/mark parity, none/Xon/Xoff/RTS/CTS flow control, and a 256-byte FIFO per transmitter and receiver |
| System Compatibility | Supports Windows Server 2003, 2008 R2, 2012, 2012 R2, and 2016, plus Linux 2.4.x to 2.6.x LTS versions |
| Form Factor And Installation | Low-profile PCI Express card; includes a full-profile bracket for alternative case fit |
| Physical Specifications | 0.70 × 2.60 × 3.90 inches; weighs approximately 1.6 oz |
| Model Identifiers | StarTech.com PEX1S953LP; Asix AX99100 chipset |