10Gtek
10Gtek 10Gb PCI-E NIC Network Card
Bottom line: The 10Gtek 10Gb PCI-E NIC Network Card ($57.99 on Amazon as of 2026-10-21 10:21 UTC): Genuine Intel 82599ES controller, not a rebadged clone; main trade-off: 10G only; no 1G, 2.5G, or 5G fallback speeds.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Genuine Intel 82599ES controller, not a rebadged clone
- ✓ Dual SFP+ ports for two 10G DAC/AOC/module links
- ✓ PCIe x8 card drops into x8 or x16 slots
- ✓ Drivers for Windows Server, Linux, and ESX/ESXi
- ✓ Ships with both full-height and low-profile brackets
Cons
- ✗ 10G only; no 1G, 2.5G, or 5G fallback speeds
- ✗ SFP+ modules and DAC cables are sold separately
- ✗ No hot-swap support, so reseating means powering down
- ✗ Windows 11 needs a manual Win10 driver workaround
SpecPicks Verdict
SpecPicks scored 10Gtek 10Gb PCI-E NIC Network Card using a rating × review-volume × price-fit model applied to published specs and reviews across the networking category. 10Gtek's networking lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for networking of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Compatible with Windows Server 2003/ 2008/ 2012, Windows7/8/10*/Visa, Linux, ESX/ESXi*. Storage over Ethernet: iSCSI, FCoE, NFS. (Only by setting up Win10 driver correctly the NIC can work on Win11! See the main picture for more detail of installation.)
- Equipped with high quality original Intel 82599ES controller which supports I/O virtualization and make the servers more stable.
- Supports 10G, not support 1G/2.5G/5G; Dual SFP+ ports let you connect to 10 Gigabit SFP+ module/DAC/AOC for meeting the demands of data center environments. PCI-E X8 Lane is suitable for both PCI-E X8 and PCI-E X16 slots.
- With profile bracket and additional low profile bracket that makes it easy to install the card in a small form factor/low profile computer case/server.NOT support hot swaping.
- What You Get: 10GbE PCI-E X8 Card X520-10G-2S x1, Low-profile Bracket x1, 30 Days Free-returned, 3 Year Warranty and Lifetime Technology Support. PS: Due to the particularity in QNAP/Synology, for QNAP/Synology users, pls contact us before purchase.
Full Specifications
| Brand | 10Gtek |
|---|---|
| Color | X520-10G-2S(2xSFP+) |
| Weight | 10g |
| Model Number | X520-DA2(Intel-1pc)(UK) |
| Compatibility | Linux |
| Mfr Part Number | 10Gtek X520-DA2 |
| Number of Items | 1 |
| Compatible Devices | Server, Desktop |
| 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 |
| Full listing title | 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) |
Ready to buy?
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) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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