What's the difference between the x540-t2 and x550-t2 ?

The X520 and X540 have a PCIe 2.0 x8 interface, which has 32Gbit/s bandwidth. The X550 has a PCIe 3.0 x4 interface, which has 32Gbit/s bandwidth. The single-port versions may be used in slower slots: X520-T1/DA1 or X540-T1/DA1 will work in a PCIe 2.0 x4 slot (at 16Gbit/s); the manual says the T550-T1 should work in a PCI 2.0 x4 slot as well, although I haven’t tried it.

Has anyone actually gotten close to the 10gbps connection speed for this card? pcie 2.0 has limit of 5 gt/s or about 4gpbs max. so can it be 10gb?

The card is PCIe 2 with x8 lanes, which is 4 GigaByte per second. 4 GigaByte is the same as 32 GigaBit, so it should handle 10 GigaBit just fine.

Will this card negotiate down to a pcie gen 3 x2? i think my only free x4 slot only runs in x2 mode which is why i'm asking.

No, please kindly note that the X550-T1 supports PCIe v3.0 (8.0GT/s) (Compatible with 2.0 and 1.1) X4/X8/X16 Lane, and it does not support X2.

does this work with windows 11?

I have not gotten it to work with windows 11. The seller says to install drivers 26.7 but those dont work

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10Gtek Single SFP+ Port 10Gb PCI-E NIC Network Card, Intel 82599EN Controller, PCI Express Ethernet LAN Adapter for Windows Server/Linux/VMware, Compare to Intel X520-DA1 (E10G42BTDA)

Product ID: 162166461

Details

Brand
10Gtek
Colour
Compatible Devices
Desktop
Data Link Protocol
Ethernet
Data Transfer Rate
10 Gigabytes
EU Spare Part Availability Duration
3 Years

⚡10Gbps blazing speed

🔌PCIe x8 interface

🧠Intel 82599EN powerhouse

Description

🚀 Upgrade your network to pro-level 10Gbps speed — because buffering is so last decade!

INTEL 82599 EN CONTROLLER - Industry-trusted chipset ensures rock-solid reliability and compatibility across major OS platforms.
PLUG PLAY WITH A TWIST - Easy installation with a quick driver setup for Windows 10 ensures you’re up and running fast — don’t get left behind on Win11!
BLAZING 10 GBPS THROUGHPUT - Experience ultra-fast data transfer that keeps your network ahead of the curve.
CROSS PLATFORM COMPATIBILITY - Supports Windows Server, Linux, VMware, and more — future-proof your infrastructure effortlessly.
SEAMLESS PC IE X 8 INTEGRATION - Plug into high-bandwidth PCI Express lanes for maximum performance and minimal latency.

The 10Gtek Single SFP+ Port 10Gb PCI-E NIC Network Card delivers blazing 10Gbps speeds via a PCIe x8 interface, powered by the Intel 82599EN controller. Compatible with a wide range of operating systems including Windows Server, Linux, and VMware, it offers reliable, high-performance connectivity for professional-grade networking setups. Ideal for managers and IT pros who demand speed and stability, this card ensures your infrastructure stays cutting-edge without compromise.

Specifications

ASIN	B01LZRSQM9
Best Sellers Rank	#11,949 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #10 in Network Interface Cards
Box Contents	Desiccant Packet, Low-Profile Bracket
Brand	10Gtek
Brand Name	10Gtek
Color	X520-10G-1S(1xSFP+)
Colour	X520-10G-1S(1xSFP+)
Compatible Devices	Desktop
Compatible Operating System Family	Linux, Windows
Country of Origin	China
Customer Reviews	4.4 out of 5 stars 450 Reviews
Data Link Protocol	Ethernet
Data Transfer Rate	10 Gigabytes Per Second
EU Spare Part Availability Duration	3 Years
Hardware Interface	PCIE x 8
Importer Contact Information	Clicktech Retail Private Limited, 18, Rabindra Sarani, Poddar Court, Gate No.2, Ground Floor Kolkata, West Bengal, 700001. Phone: 18004192373, Email: [email protected]
Item Dimensions L x W x H	12.5L x 6.9W x 1.8H Centimeters
Item Type Name	Network Card
Item Weight Unit of Measure	86 Grams
Manufacturer	10Gtek, Shenzhen 10Gtek Transceivers Co. Ltd, Dongguan Branch, Area B, 5th Floor, Building 11, Jinnuo Industrial Park, Technology Avenue, Hetian Community, Houjie Town, Dongguan City, Guangdong Province, P.R. China, Email: @10gtek.com
Manufacturer Contact Information	Shenzhen 10Gtek Transceivers Co. Ltd, Dongguan Branch, Area B, 5th Floor, Building 11, Jinnuo Industrial Park, Technology Avenue, Hetian Community, Houjie Town, Dongguan City, Guangdong Province, P.R. China, Email: @10gtek.com
Manufacturer Part Number	X520-DA1(Intel-1pc)
Minimum Required Operating System Version	Mac OS 11 Big Sur, Mac OS 12 Monterey, Mac OS 13 Ventura, Mac OS 14 Sonoma, Windows 10, Windows 11
Model Number	8541551539
Number of Items	1
Packer Contact Information	Shenzhen 10Gtek Transceivers Co. Ltd, Dongguan Branch, Area B, 5th Floor, Building 11, Jinnuo Industrial Park, Technology Avenue, Hetian Community, Houjie Town, Dongguan City, Guangdong Province, P.R. China, Email: @10gtek.com
Product Dimensions	12.5L x 6.9W x 1.8H Centimeters
Unit Count	1.0 Count
Warranty Description	2 Year Manufacturer

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