The only ten-gigabit card on this shelf: two copper sockets on an Intel X540, PCIe 2.1 ×8, with its cable grades, its distances and a three-year warranty stated — $49.99 on Amazon.com on October 26, 2026.
The title: 10Gtek 10 Gb dual RJ45 port network card with X540 controller, PCIe, for Windows, Linux and ESX servers, compared to the Intel X540-T2. The bullets: the Intel X540 controller with intelligent offloads; Windows Server 2003 to 2012, Windows 7, 8 and 10, Linux and ESX/ESXi, with iSCSI, FCoE and NFS, and Windows 11 after manual setup; Cat 6A to 100 m and Cat 6 to 55 m, PCI Express 2.1, 5.0 GT/s, ×8; a profile bracket and a low-profile one, no hot swapping; and the box with a three-year warranty. The description adds 10 GbE / 1 GbE / 100 Mb/s PHYs, jumbo frames to 15.5 KB, 802.1q VLAN, data center bridging and an operating range of 0 to 55 °C.
The shelf it sits on
Card
Sockets
Speed
Controller
Bus stated
Brackets
Amazon.com, October 26, 2026
VIMIN
1
2.5G
Realtek RTL8125B
fits ×1 to ×16
standard and low-profile
$17.98
YuanLey
1
2.5G
Realtek RTL8125B
fits ×1 to ×16
standard and low-profile; heat sink
$17.98
GiGaPlus
1
2.5GBASE-T
Realtek RTL8125B
fits ×1 to ×16
standard and low-profile; heat sink
$19.98
TP-Link TX201
1
2.5G
not named
not stated
full and low-profile
$26.99
10Gtek X540-T2
2
10G / 1G / 100M
Intel X540
PCIe 2.1 ×8
standard and low-profile
$49.99
DIGITUS DN-10136
4
2.5GBASE-T
Realtek RTL8125B
PCIe 2.1
not stated
$92.07
KALEA-INFORMATIQUE
2
2.5GBASE-T
two Intel I226
PCIe 3.1 ×1
high and low-profile
no offer
Ten gigabits and the slot
Two 10 Gbit/s sockets need about 20 Gbit/s of bus. PCIe 2.1 gives about 4 Gbit/s a lane, so the ×8 slot is what lets both run at full speed.
The price
$49.99 on October 26, 2026: less than twice the single-socket TP-Link TX201, for two sockets at four times the speed.
Prices quoted in this text were read on October 26, 2026. The live price is at the top of the page.
Where it holds up, and where it stops
Strengths
Two 10-gigabit copper sockets on an Intel X540, the only ten-gigabit card on this shelf
Cable grades and distances stated: Cat 6A to 100 m, Cat 6 to 55 m
Jumbo frames to 15.5 KB, 802.1q VLAN and data center bridging in the description
Three-year warranty and lifetime technical support
Compromises
Windows 11 needs manual setup, by the page's own note
No cooling named; the stated operating range ends at 55 °C
Needs an ×8 or ×16 slot for full speed
Specifications
PCIe generation
PCIe 2.1, 5.0 GT/s — stated in the third bullet; the description gives the base specification as 2.1 at 2.5 or 5 GT/s
Lane count
Eight — stated in the third bullet as an ×8 card for ×8 and ×16 slots; the description lists bus widths of ×1, ×2, ×4 and ×8
Port speed standard
10 GbE, 1 GbE and 100 Mb/s copper — stated in the description; Cat 6A to 100 m and Cat 6 to 55 m in the third bullet
Port count
Two — stated in the title and the third bullet as dual copper RJ45 ports
Controller family
Intel X540 — stated in the title and the first bullet, with intelligent offloads named
Bracket heights supplied
Two — the fourth bullet names a profile bracket and an additional low-profile one
Cooling arrangement
Not published on the Amazon.com listing — the description gives an operating temperature range of 0 to 55 °C
Stated operating system support
Windows Server 2003, 2008 and 2012, Windows 7, 8 and 10, Linux and ESX/ESXi — stated in the second bullet, which adds that Windows 11 works after manual setup and asks buyers to ask for the guide first
Amazon reference
B01HMGWOU8 on Amazon.com; B01ISV7TYM on Amazon.de and the other European stores
EAN
0603149411074
On Amazon.com
Amazon.com had an offer at $50 on October 26, 2026.
The questions that come up before an order
Does it support 2.5G or 5G?
The description lists 10 GbE, 1 GbE and 100 Mb/s; 2.5G and 5G are not among them. Connected to a 2.5G switch port, it would link at 1 GbE.
Will it work in a ×4 slot?
The description lists bus widths down to ×1, so it should link, but at PCIe 2.1 each lane carries about 4 Gbit/s; two sockets at 10 Gbit/s need the full ×8.
Our score
8.2/ 10
A well-documented dual ten-gigabit card with an Intel controller, cable distances and a warranty stated. Windows 11 setup and the ×8 slot are the two things to plan for.
The buyer this one serves, among network and storage gear
A server, NAS build or workstation with a free ×8 or ×16 slot and a 10GBASE-T switch, running Windows Server, Linux or ESXi.
What this one costs among network and storage gear
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Specifications: the manufacturer sheet for network and storage gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
four RJ45 sockets · 10/100/1000/2500BASE-T · PCIe 2.1 · Realtek RTL8125B in the description · no lane count, brackets or OS
A four-socket 2.5-gigabit server card whose Amazon.com page is a title and a description: PCIe 2.1, four RJ45 ports and a Realtek RTL8125B chipset, with no lane count, brackets or operating systems.
Best for: A server or a router build that needs four 2.5-gigabit sockets from one slot, once the lane count has been confirmed with the maker.
one 2.5GBASE-T socket · Realtek RTL8125B · Wake on LAN · fits ×1, ×4, ×8 and 16 · two brackets · heat sink · driverless on Windows 10
A single-socket 2.5-gigabit card on a Realtek RTL8125B with Wake on LAN, a heat sink and both brackets, that says where its drivers come from on every system but Windows 10.
Best for: A desktop moving to 2.5-gigabit where Wake on LAN and a heat sink are wanted and the driver will be fetched from Realtek on Linux or macOS.
two RJ45 sockets · 2500/1000/100/10 BASE-T · PCIe 3.1 ×1 · dual Intel I226 SRKTU with an ASM bridge · high and low brackets · jumbo frames to 9.5 KB
A dual-socket 2.5-gigabit card on two Intel I226 controllers that publishes its PCIe generation and lane count — 3.1 ×1 — and puts both sockets behind that single lane.
Best for: A small server or a workshop machine that needs two separate 2.5-gigabit sockets from one slot, where the ×1 requirement is a fit rather than a compromise.
