This Intel made/version of the X520-DA2 is way more compatible(These use the genuine Intel boot code while the Dell X520's use a modified firmware version more tuned to just their Poweredge Servers and their lifecycle controller) than the cheaper Dell versions of the X520! 

Some servers(especially SuperMicro / Synology / Lenovo / HP) do not like the Dell X520-DA2 where this real Intel made version does work great in them. These better Intel's work perfectly fine in Dell also btw. The real Intel 82599 / 82599ES chipset also tends to be more supported and trouble free than the Intel X710-DA2 + in many applications.

All ports tested day cards go out and unlike most any other ebay sellers, we also update the Intel boot code to the latest version, not as easy as you think!

Any seller that tells you the Dell version and the Intel version of the X520 are the same is either lying or does not know what they are really selling. We do know, we have sold 1000s of E10G42BTDA .

Pulled in good working order from retired servers from a multi billion dollar company. No broken clips / heatsinks etc!

 

Ships from U.S.A. ! We also can ship via Ebay's Global Shipping Program no problem.

Intel X520-DA2 with low & full/regular/high profile brackets included.  Not cheap China copies from questionable companies, but 100% made by Intel with fully updated code from Intel's site. 

As you can see we have sold over 2500+ of these with no complaints, we do not sell fakes period!

Works with any brand 10Gb SPF+ DAC / Direct Attached Cable & 1Gb SX / LX SFP optics. For 10Gb SFP+ SR / LR Optics, Intel branded is recommended.(Sometimes other brands work fine & we can help with workarounds for certain OS's but we can not guarantee if not using Intel 10gb transceivers ie E10GSFPSR, E10GSFPLR)

Works in any brand server and since is 100% made by Intel uses the regular Intel X520 drivers available on Intel's Site. Driver is included natively with Windows Server 2012+, Ubuntu, Linux etc also since they all have X520 82599 ES82599 drivers built in now.

90 Day DOA warranty with 100% refund or advanced replacement(Your choice) if sometime happens to go wrong.

Specs for Intel X520-DA2
Host Interface: PCI Express
Interfaces/Ports: 2 x SPF+ Duplex Network Technology: 10GBase – 10 Gigabit Ethernet
Card Height: One full/regular/high profile bracket included and one low profile bracket too
Form Factor: Internal
Dimensions: 5.73' Width
Green Compliance: Yes
Green Compliance Certificate/Authority: RoHS
 
Picture is of one of the actual items! 

Terms: Have 3900+ Feedback So Buy with Confidence-
--Specs believed to be accurate but please check with manufacturer to be sure.
--FREE Shipping/Handling via USPS/Fedex(My Choice) to United States.(Others will cost additional $)
--If Paying with Paypal, only shipped to Paypal Provided Address.
--Delivery signature required for all shipments over $250(Included free in S&H)
--No shipping to Canada or International without emailing me first unless using Ebay's Global Shipping Program
--Buyer responsible for all brokerage/duty fees!