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StarTech.com PEX2S953LP 2 Port RS232 Serial Adapter Card with 16950 UART - PCI Express Serial Port Card - 921.4Kbps - Windows & Linux Compatible
- UPGRADED CAPABILITIES: Add two RS232 DB9 connections 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
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2 Port RS232 Serial Adapter Card adds two RS232 DB9 connections through PCI Expr
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.com'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 PEX2S953LP is a PCIe x1 adapter card that adds two RS-232 DB9 serial ports, making it suitable for servers and PCs that need to connect serial peripherals or legacy equipment at speeds up to about 921 Kbps.
Recommended For
- Desktop or server operators who need to add two DB9 RS-232 ports for legacy devices such as serial printers, card readers, PIN pads, or modems.
- Retail, kiosk, or ATM system integrators connecting serial peripherals in a fixed installation that has an available PCIe slot.
- Industrial automation and lab users who need RS-232 connections for PLCs, control equipment, scientific sensors, or instruments in a desktop or server.
- IT staff upgrading a low-profile or full-size desktop/server that lacks enough built-in serial ports and needs a PCIe-installed solution.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Desktop or server PCIe upgrades that need two RS-232 DB9 serial connections |
| Interface And Compatibility | PCI Express x1 card with a PCI Express 1.1 bus and serial interface; uses an LP4 power input |
| Serial Ports And Configuration | Two integrated DB9 male RS-232 ports, supporting baud rates up to 921.6 Kbps, 5–9 data bits, 1, 1.5, or 2 stop bits, none/odd/even/space/mark parity, and no, Xon/Xoff, or RTS/CTS flow control |
| FIFO And Chipset | 256-byte FIFO per transmitter and receiver, powered by an ASIX AX99100 chipset |
| Operating System Support | Windows Server 2003, 2008 R2, 2012, 2012 R2, and 2016; Linux 2.4.x to 2.6.x LTS versions |
| Bracket And Physical Dimensions | Low-profile card supplied with low-profile and full-profile brackets; measures 0.70 × 2.60 × 3.90 inches and weighs 2.00 oz |
| Model Identifiers | StarTech.com PEX2S953LP |