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 Dual RJ45 Port Network Card with X540 Controller, PCIe Ethernet LAN Adapter for Windows/Linux/ESX Servers, Compare to Intel X540-T2

Product ID: 33382923

Details

Brand
10Gtek
Color
Compatible Devices
Server Desktop
Compatible Operating System Family
Linux Windows
Data Link Protocol
Ethernet
Data Transfer Rate
10 Gigabits

⚡10 Gbps blazing speed

🔌Dual RJ45 copper ports

🖥️PCIe 2.1 x8 interface

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¥15560

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Upgrade your network, outrun the competition!

BLAZING 10 GIGABIT SPEED - Experience ultra-fast data transfer that keeps your servers ahead of the curve.
VERSATILE OS COMPATIBILITY - Plug and play with Windows, Linux, and ESX servers—future-proof your network infrastructure.
COMPACT FLEXIBLE INSTALLATION - Includes standard and low-profile brackets to fit any server or compact workstation setup.
INTEL X 540 CONTROLLER STABILITY - Powered by the original Intel chip for rock-solid, intelligent offloads and server reliability.
DUAL RJ 45 PORTS FOR MAXIMUM CONNECTIVITY - Connect seamlessly with Cat6A cables up to 100m—perfect for modern data centers.

The 10Gtek 10Gb Dual RJ45 Network Card with Intel X540 controller delivers blazing 10 Gbps speeds via dual copper RJ45 ports, supporting Cat6A cables up to 100 meters. Designed for PCIe 2.1 x8 slots, it ensures stable, intelligent offloads compatible with Windows, Linux, and ESX servers. Its versatile installation options and robust build make it a top choice for professionals demanding high-performance, reliable networking in data centers and advanced workstations.

Specifications

ASIN	B01HMGWOU8
Best Sellers Rank	#13 in Internal Computer Networking Cards
Brand	10Gtek
Color	X540-10G-2T(2xRJ45)
Compatible Devices	Server, Desktop
Compatible Operating System Family	Linux, Windows
Customer Reviews	4.3 4.3 out of 5 stars (391)
Data Link Protocol	Ethernet
Data Transfer Rate	10 Gigabits Per Second
Hardware Interface	PCIE x 8
Item Dimensions L x W x H	8.8"L x 5.7"W x 2.69"H
Item Weight	136 Grams
Manufacturer	10Gtek
Mfr Part Number	X540-T2 (Intel-1pc)
Minimum Required Operating System Version	Windows 7
Model Number	X540-T2(Intel-1pc)
Unit Count	1.0 Count

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