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, Dual SFP+ Port, with Intel 82599ES Controller, PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware, Compare to Intel X520-DA2(E10G42BTDA)

10Gtek 10Gb PCI-E NIC Network Card, Dual SFP+ Port, with Intel 82599ES Controller, PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware, Compare to Intel X520-DA2(E10G42BTDA)

Product ID: 33382921

Details

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

⚡10Gbps blazing speed

🔗Dual SFP+ ports for versatile connectivity

🖥️Intel 82599ES for rock-solid stability

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Description

⚡ Upgrade your network, outrun the competition!

DUAL SFP PORTS - Seamlessly connect with high-performance 10G SFP+ modules, DAC, or AOC cables for data center-grade networking.
INTEL 82599 ES CONTROLLER - Powered by Intel’s premium chipset ensuring enterprise-level reliability and I/O virtualization support.
BLAZING 10 GBPS THROUGHPUT - Experience ultra-fast data transfer that leaves 1G/2.5G/5G in the dust.
CROSS PLATFORM POWERHOUSE - Supports Windows Server, Linux, VMware—future-proof your infrastructure with broad OS compatibility.
FLEXIBLE PCI E COMPATIBILITY - Fits both PCI-E x8 and x16 slots with included low-profile bracket for compact builds.

The 10Gtek 10Gb PCI-E NIC Network Card features dual SFP+ ports and an Intel 82599ES controller, delivering stable 10Gbps Ethernet connectivity. Compatible with Windows Server, Linux, and VMware, it supports PCI-E x8/x16 slots and includes low-profile brackets for versatile installation. Ideal for professionals demanding high-speed, reliable networking in data centers or advanced desktop setups.

Specifications

ASIN	B01DCZCA3O
Best Sellers Rank	#11 in Internal Computer Networking Cards
Brand	10Gtek
Color	X520-10G-2S(2xSFP+)
Compatible Devices	Server, Desktop
Compatible Operating System Family	Linux, Windows
Customer Reviews	4.4 4.4 out of 5 stars (819)
Data Link Protocol	Ethernet
Data Transfer Rate	10 gigabytes_per_second
Hardware Interface	PCIE x 8
Item Dimensions L x W x H	10.35"L x 6.42"W x 2.17"H
Item Weight	5.6 ounces
Manufacturer	10Gtek
Mfr Part Number	10Gtek X520-DA2
Minimum Required Operating System Version	Windows 7
Model Number	X520-DA2(Intel-1pc)(UK)
Number of Items	1
UPC	603149407824

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¥17692

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

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