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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X520-10G-2S-X8

Product ID: 52650747

Details

Brand
10Gtek
Colour
2) X520-DA2
Compatible Operating System Family
Windows
Compatible devices
Desktop
Data link protocol
Ethernet
Data transfer rate
10 Gigabytes

⚡10Gbps blazing speed

🔗Dual SFP+ ports for versatile connectivity

🖥️Intel 82599ES controller with SR-IOV support

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Sold byAmazon PeruDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Upgrade your network, upgrade your game.

DUAL SFP PORTS - Seamlessly connect with high-performance SFP+ modules or DAC cables for flexible setups.
INTEL 82599 ES POWERHOUSE - Leverage advanced Intel controller tech with SR-IOV and Intel DDIO for optimized network efficiency.
BLAZING 10 GBPS THROUGHPUT - Experience ultra-fast data transfer that keeps your network ahead of the curve.
CROSS PLATFORM COMPATIBILITY - Plug and play across Windows Server, Linux, VMware, and more — future-proof your infrastructure.
PRO GRADE RELIABILITY WARRANTY - Backed by a 3-year warranty and trusted by thousands, this card is built for mission-critical environments.

The 10Gtek X520-DA2 is a high-performance 10Gb PCI-E network card featuring dual SFP+ ports and the Intel 82599ES controller. It supports advanced virtualization technologies like SR-IOV and Intel DDIO, ensuring superior network throughput and efficiency. Compatible with a wide range of operating systems including Windows Server, Linux, and VMware, it offers versatile connectivity options for professional-grade networking with a 3-year warranty.

Specifications

ASIN	B01DCZCA3O
Best Sellers Rank	7,908 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 14 in Network Cards
Box Contents	X520-DA2(Intel-1pc)(UK)
Brand Name	10Gtek
Color	2) X520-DA2 (2x SFP+)
Compatible Devices	Desktop
Compatible Operating System Family	Windows
Country of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (222)
Data Link Protocol	Ethernet, Gigabit Ethernet
Data Transfer Rate	10 Gigabytes Per Second
Hardware Interface	PCIE x 8
Item Weight	159 g
Manufacturer	10Gtek
Manufacturer Part Number	10Gtek X520-DA2
Model Number	X520-DA2(Intel-1pc)(UK)
Product Warranty	3 years
UPC	603149407824

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