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

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

Product ID: 34831237

Details

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

⚡10Gbps blazing speed

🔌Single SFP+ port for direct 10G connection

🖥️PCI-E x8 lane compatibility

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Upgrade to 10Gtek: Where speed meets stability in a sleek package!

BLAZING 10 GBPS THROUGHPUT - Experience ultra-fast data transfers that crush 1Gbps bottlenecks and accelerate your workflows.
SEAMLESS SFP CONNECTIVITY - Plug into high-performance 10G SFP+ modules or DAC cables for zero-lag, low-latency networking.
VERSATILE PCI E X 8 INTERFACE - Fits both PCI-E x8 and x16 slots, ensuring effortless integration into your existing setup.
COMPACT FLEXIBLE INSTALLATION - Includes full and low-profile brackets to fit sleek desktops and compact servers alike.
INTEL 82599 EN POWERED STABILITY - Built on a trusted Intel controller with I/O virtualization for rock-solid server-grade reliability.

The 10Gtek 10Gb PCI-E NIC Network Card features a single SFP+ port powered by the Intel 82599EN controller, delivering true 10Gbps Ethernet speeds. Compatible with Windows Server, Linux, and VMware, it supports PCI-E x8 and x16 slots and comes with both standard and low-profile brackets for versatile installation. Ideal for data centers and high-speed media workflows, it offers stable, high-performance networking with a 3-year warranty and lifetime tech support.

Specifications

ASIN	B01LZRSQM9
Best Sellers Rank	#20 in Internal Computer Networking Cards
Brand	10Gtek
Color	X520-10G-1S(1xSFP+)
Compatible Devices	Server, Desktop
Compatible Operating System Family	Linux, Windows
Customer Reviews	4.4 4.4 out of 5 stars (476)
Data Link Protocol	Ethernet
Data Transfer Rate	10 Gigabytes Per Second
EU Spare Part Availability Duration	3 Years
Hardware Interface	PCIE x 8
Item Weight	86 Grams
Manufacturer	10Gtek
Mfr Part Number	X520-DA1(Intel-1pc)
Minimum Required Operating System Version	Windows 10
Model Number	8541551539
Unit Count	1.0 Count

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