StarTech.com 2.5Gbps 2.5GBASE-T PCIe Network Card

Manufacturer: Startech | Model: ST2GPEX | Product ID: 5042 | Warranty: 2 Years
£31.41 (inc. VAT)
16 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Ports & interfaces
Connectivity technologyWired
Host interfacePCI Express
InterfaceEthernet
Ethernet LAN (RJ-45) ports1
Network
Maximum data transfer rate2500
Networking standardsIEEE 802.3ab,IEEE 802.3bz,IEEE 802.3i,IEEE 802.3u
Ethernet LANYes
Ethernet interface type2.5 Gigabit Ethernet,Fast Ethernet,Gigabit Ethernet
Ethernet LAN data rates10,100,1000,2500
Auto MDIX IEEEYes
Full duplexYes
Design
Component forPC
Product colourBlack
InternalYes
ChipsetRealtek RTL8125
LED indicatorsYes
CertificationCE, FCC, REACH
System requirements
Windows operating systems supportedWindows 10,Windows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 7,Windows 7 Enterprise,Windows 7 Enterprise x64,Windows 7 Home Basic,Windows 7 Home Basic x64,Windows 7 Home Premium,Windows 7 Home Premium x64,Windows 7 Professional,Windows 7 Professional x64,Windows 7 Starter,Windows 7 Starter x64,Windows 7 Ultimate,Windows 7 Ultimate x64,Windows 7 x64,Windows 8,Windows 8 Enterprise,Windows 8 Enterprise x64,Windows 8 Pro,Windows 8 Pro x64,Windows 8 x64
Linux operating systems supportedYes
Server operating systems supportedWindows Server 2008 R2,Windows Server 2012 R2,Windows Server 2016
Operational conditions
Operating temperature (T-T)5 - 50
Storage temperature (T-T)-20 - 60
Operating relative humidity (H-H)20 - 80
Sustainability
Sustainability certificatesRoHS
Weight & dimensions
Width120
Depth80
Height20
Weight138
Packaging data
Low-profile bracketYes
Package width170
Package depth142
Package height30
Logistics data
Harmonized System (HS) code85176990
Other features
Quick start guideYes

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Wed 26th Aug 2026 to Sat 29th Aug 2026
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Tue 25th Aug 2026 to Thu 27th Aug 2026
View all Delivery Options & International Rates
PCI Express LAN Card | Windows ®, MacOS & Linux | Realtek RTL8125| x4 PCIe

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

The StarTech.com Advantage

- 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
Ports & interfaces
Connectivity technologyWired
Host interfacePCI Express
InterfaceEthernet
Ethernet LAN (RJ-45) ports1
Network
Maximum data transfer rate2500
Networking standardsIEEE 802.3ab,IEEE 802.3bz,IEEE 802.3i,IEEE 802.3u
Ethernet LANYes
Ethernet interface type2.5 Gigabit Ethernet,Fast Ethernet,Gigabit Ethernet
Ethernet LAN data rates10,100,1000,2500
Auto MDIX IEEEYes
Full duplexYes
Design
Component forPC
Product colourBlack
InternalYes
ChipsetRealtek RTL8125
LED indicatorsYes
CertificationCE, FCC, REACH
System requirements
Windows operating systems supportedWindows 10,Windows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 7,Windows 7 Enterprise,Windows 7 Enterprise x64,Windows 7 Home Basic,Windows 7 Home Basic x64,Windows 7 Home Premium,Windows 7 Home Premium x64,Windows 7 Professional,Windows 7 Professional x64,Windows 7 Starter,Windows 7 Starter x64,Windows 7 Ultimate,Windows 7 Ultimate x64,Windows 7 x64,Windows 8,Windows 8 Enterprise,Windows 8 Enterprise x64,Windows 8 Pro,Windows 8 Pro x64,Windows 8 x64
Linux operating systems supportedYes
Server operating systems supportedWindows Server 2008 R2,Windows Server 2012 R2,Windows Server 2016
Operational conditions
Operating temperature (T-T)5 - 50
Storage temperature (T-T)-20 - 60
Operating relative humidity (H-H)20 - 80
Sustainability
Sustainability certificatesRoHS
Weight & dimensions
Width120
Depth80
Height20
Weight138
Packaging data
Low-profile bracketYes
Package width170
Package depth142
Package height30
Logistics data
Harmonized System (HS) code85176990
Other features
Quick start guideYes

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a simple, hassle-free returns policy. If for whatever reason you are not happy with the item purchased, you can return it to us within 14 days of receipt for a refund. This applies to items purchased direct through Buykingston only.

Our 14 Day Returns Money Back Guarantee:
For items returned in resaleable condition, with all original packaging. If an item has been opened for inspection but shows signs of use beyond that, a deduction may apply to reflect the reduced value — see our full Terms & Conditions (Section 12) for details.

Some items are excluded from our money-back guarantee unless they have developed a fault. These include:

- Headphones
- Earphones
- Custom made and designed products, such as flash memory products with custom logos on them, e.g. USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
14 days from date of receipt, or expected date of receipt on non-tracked items.

How do I go about returning my order?
Please contact us via our contact page with your order number. We will provide you with an RMA number and return instructions, including your return deadline and whether a freepost label applies to your order.

Do I need to contact you before returning my order?
Yes, to obtain an RMA number before sending anything back.

Does my item have to include its original packaging?
Yes, to qualify for our 14 day money-back guarantee. For faulty items, we understand you may no longer have the original packaging.

Who pays for return postage?
If your item is faulty, damaged, or not as described, we cover reasonable return postage, or provide a freepost label where available. If you are returning an item for another reason (including simply changing your mind), you are responsible for return postage unless we have expressly confirmed a freepost label in your RMA email — we recommend using a tracked and insured service for items of significant value.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer directly for assistance.

Please ensure you have read and comply in full with Sections 11–13 of our Terms & Conditions.