2.5Gbps 2.5GBASE-T PCIe Network Card

PCI Express LAN Card | Windows ® & Linux | Realtek RTL8125| x1 PCIe

Product ID: ST2GPEX

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  • 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
Your price
€64.99 EUR
VAT not included in the price

In stock: 29

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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 x1 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 StarTech.com 2-year warranty and free lifetime technical support.

Partner Numbers

  • ALSO Denmark 000000000003568081
  • ALSO Norway 000000000003568081
  • ALSO Sweden 000000000003568081
  • D&D Distribution ST2GPEXCA
  • Esprinet ST2GPEX
  • Exertis 0010275949
  • Exertis IE 0010275949
  • Ingram Austria V934794
  • Ingram DK V934794
  • Ingram Finland V934794
  • Ingram Germany V934794
  • Ingram IE V934794
  • Ingram Micro Belgium 4643990
  • Ingram Micro España V934794
  • Ingram Micro France V934794
  • Ingram Micro Italy V934794
  • Ingram Micro Netherlands 4643990
  • Ingram Micro Sweden V934794
  • Ingram Micro UK V934794
  • Ingram Switzerland V934794
  • Tech Data - Belgium 5503569
  • Tech Data - France 5503569
  • Tech Data - Italy 5503569
  • Tech Data - Netherlands 5503569
  • UPC 065030882040


  • Windows 10 logo
  • Windows 8 logo
  • Windows 7 logo
  • Windows Server 2016 logo
  • Linux logo
Windows 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)


Warranty Information Warranty 2 Years
Connector(s) 1 - Connector Type(s) PCI Express x1
1 - External Ports RJ-45
Environmental Operating Temperature 5°C to 50°C
Storage Temperature -20°C to 60°C
Humidity 20% ~ 80% RH
Hardware Ports 1
Bus Type PCI Express
Card Type Standard Profile (LP bracket incl.)
Industry Standards IEEE 802.3bz (2.5GBASE-T)
IEEE 802.3ab (1000BASE-T)
IEEE 802.3u (100BASE-TX)
IEEE 802.3i (10BASE-TX)
Chipset ID Realtek RTL8125
Indicators 1 - LED Indicators Green LED: 2.5Gbps
Green LED: 1Gbps/100Mbps/10Mbps
Packaging Information Package Height 30.0 mm [1.2 in]
Package Length 14.2 cm [5.6 in]
Shipping (Package) Weight 60.0 g [2.1 oz]
Package Width 17.0 cm [6.7 in]
Performance Compatible Networks 2.5G/1G/100Mbps/10Mbps
Auto MDIX Yes
Full Duplex Support Yes
Jumbo Frame Support 16K max.
Physical Characteristics Product Height 20.0 mm [0.8 in]
Product Length 80.0 mm [3.1 in]
Weight of Product 138.0 g [4.9 oz]
Product Width 12.0 cm [4.7 in]
Material Steel
Software OS Compatibility Windows 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 1 - Included in Package Network Card
Low-Profile Bracket
Quick-Start Guide


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Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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