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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10Gb PCI-E NIC Network Card, Dual Copper RJ45 Port, with Intel X540 Controller, PCI Express Ethernet LAN Adapter Support Windows Server/Windows/Linux/ESX, Compare to Intel X540-T2

Product ID: 233911018

Details

Brand
10Gtek
Colour
Copper
Compatible devices
Server Desktop
Data link protocol
Ethernet
Data transfer rate
10 Gigabits
Hardware interface
PCIE x 8

⚡10Gbps Speed

🔌Dual RJ45 Ports

🖥️Compatible with Major OS

Description

🚀 Elevate Your Network Game!

EASY INSTALLATION - Includes both standard and low-profile brackets for hassle-free installation in any case.
UNLEASH BLAZING SPEEDS - Experience lightning-fast 10Gbps data transfer for seamless connectivity.
DUAL CONNECTIVITY POWER - Connect effortlessly with dual RJ45 ports, perfect for high-demand data center environments.
VERSATILE COMPATIBILITY - Supports Windows, Linux, and ESX, ensuring you can integrate it into any setup.
INTELLIGENT OFFLOADS FOR STABILITY - Equipped with an advanced Intel X540 controller for enhanced server stability and performance.

The 10Gb PCI-E NIC Network Card by 10Gtek features a powerful Intel X540 controller, dual RJ45 ports for high-speed connectivity, and broad compatibility with various operating systems. Designed for data centers, it supports intelligent offloads for improved server stability and comes with installation brackets for easy setup.

Specifications

ASIN	B01HMGWOU8
Brand Name	10Gtek
Color	Copper
Compatible Devices	Server, Desktop
Customer Reviews	4.4 4.4 out of 5 stars (749)
Data Link Protocol	Ethernet
Data Transfer Rate	10 Gigabits Per Second
Hardware Interface	PCIE x 8
Item Weight	136 Grams
Manufacturer	10Gtek
Manufacturer Part Number	X540-T2 (Intel-1pc)
Model Number	X540-T2(Intel-1pc)

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