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StarTech 1 Port 2.5Gbps 2.5GBASE-T PCIe Network Card
SKU# AC33846, Model# ST2GPEX


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SKU # AC33846 | Model # ST2GPEX | Brand StarTech

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This 1 port 2.5Gbps PCIe network card offers a versatile and low-cost way to deploy 2.5GbE network connectivity - Multi-Gigabit Ethernet connectivity with four network speeds: 2.5G 1G 100Mbps 10Mbps - Compatible with both 2.5GBASE-T and NBASE-T specifications - Supports 2.5Gbps network speeds on CAT5e cabling and CAT6a - IEEE 802.3az and IEEE802.3u compliant energy efficient Realtek RTL8125 chipset - Flexible installation with both standard and low-profile brackets included - Warranty: 2-year

Manufacturer Warranty: 2 Years Limited Warranty
Manufacturer Contact Info:,

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 Solution  The 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 Performance  The 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 Ethernet  The 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 2-year warranty and free lifetime technical support. 

Connector Type(s)PCI Express x4 Male
External PortsRJ-45 Female
Humidity20% ~ 80% RH
Operating Temperature5°C to 50°C
Storage Temperature-20°C to 60°C
Bus TypePCI Express
Card TypeStandard Profile (LP bracket incl.)
Chipset IDRealtek RTL8125
Industry StandardsIEEE 802.3ab (1000BASE-T)
IEEE 802.3bz (2.5GBASE-T)
IEEE 802.3i (10BASE-TX)
IEEE 802.3u (100BASE-TX)
LED IndicatorsGreen LED: 1Gbps/100Mbps/10Mbps
Green LED: 2.5Gbps
Packaging Information
Package Height30 mm [1.2 in]
Package Length14.2 cm [5.6 in]
Package Width17 cm [6.7 in]
Shipping (Package) Weight60 g [2.1 oz]
Auto MDIXYes
Compatible Networks2.5G/1G/100Mbps/10Mbps
Full Duplex SupportYes
Jumbo Frame Support16K max.
Physical Characteristics
Product Height2 cm [0.8 in]
Product Length80 mm [3.1 in]
Product Width12 cm [4.7 in]
Weight of Product138 g [4.9 oz]
Description CDW 75 - 1st 1 Port 2.5Gbps 2.5GBASE-T PCIe Network Card
OS CompatibilityWindows 10
Windows 8
Windows 7
Windows Server 2016
Windows Server 2012 R2
Windows Server 2008 R2
Linux Kernel 2.4.20 - 4.x (LTS versions only)
What's in the Box
Included in PackageLow-Profile Bracket
Network Card
Quick-Start Guide

SKU # AC33846 | Model # ST2GPEX

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