StarTech.com 1 Port 2.5Gbps 2.5GBASE-T PCIe Network Card x4 PCIe - Windows, MacOS & Linux - PCI Express LAN Card - RTL8125 (ST2GPEX)

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46 availableas of 09/18/2026

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Compliance, certifications and origin

  • RoHS
  • REACH
  • WEEE
  • Origin: China
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the StarTech.com ST2GPEX

This single-port 2.5Gbps PCIe network card offers a versatile and low-cost way to deploy 2.5GbE network connectivity. It adds one copper Ethernet port to your server or desktop computer and provides Multi-Gigabit Ethernet access to your network at four speeds: 2.5 Gbps, 1G, 100Mbps, 10Mbps.Cost-Effective Multi-Gigabit Ethernet SolutionThe 2.5GBASE-T NIC provides additional bandwidth using your existing Ethernet infrastructure to help reduce the cost of cabling upgrades. The card enables you to connect to 2.5GBASE-T and NBASE-T equipment at network speeds of 10Mbps, 100Mbps, 1Gbps, 2.5Gbps over your CAT5e cabling (up to 100 m depending on the network configuration).Optimal Technology for Optimal PerformanceThe network adapter card adds one Ethernet port to your workstation through a x4 PCIe slot. It features 2.5GBASE-T technology, supporting advanced Multi-Gigabit systems, including Cisco campus switches and Aruba Networks access points. The network card also supports NBASE-T and additional features including 16K Jumbo Frames, Auto-MDIX and Wake-on-LAN (WoL).Efficient EthernetThe Realtek RTL8125 chipset, compliant with IEEE 802.3az and IEEE802.3u supports the PCIe 2.0 interface for PC embedded applications. It provides up to a 250% increase in data rate over Gigabit Ethernet and requires no changes to existing cable infrastructure. The ST2GPEX is backed by a StarTech.com 2-year warranty and free lifetime technical support. More from the Manufacturer
More from the manufacturer

Technical specifications

Technical Specifications of the StarTech.com ST2GPEX

General Information

General Information specifications
Manufacturer StarTech.com
Manufacturer Part Number ST2GPEX
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Model ST2GPEX
Product Name 2.5Gbps 2.5GBase-T PCIe Network Card
Packaged Quantity 1 Each
Product Type Gigabit Ethernet Card

Interfaces/Ports

Interfaces/Ports specifications
Host Interface PCI Express x4
Total Number of Ports 1
Number of Network (RJ-45) Ports 1

Media & Performance

Media & Performance specifications
Media Type Supported Twisted Pair

Network & Communication

Network & Communication specifications
Network Technology 10/100Base-TX1000Base-T2.5GBase-T

Physical Characteristics

Physical Characteristics specifications
Form Factor Plug-in Card
Height 0.8"
Width 4.7"
Depth 3.1"
Weight (Approximate) 4.90 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • 2.5Gbps 2.5GBASE-T PCIe Network Card
  • 1 x Low-Profile Bracket
  • 1 x Quick-Start Guide
Device Supported WorkstationAccess PointServerSwitchComputer
Green Compliant Yes
Country of Origin China
Environmental Compliance Restriction of Hazardous Substances (RoHS)Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)Waste Electrical and Electronic Equipment Directive (WEEE)

Warranty

Warranty specifications
Limited Warranty 2 Year

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