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Green PCB network card with silver RJ45 port and black low-profile bracket

No Sew

No Sew 5Gbps PCIe 3.1 x1 Network Card RTL8126 Low Profile

SKU CH-4ZC1-9248J

Adds a single RJ45 port running at 5Gbps, 2.5Gbps, 1Gbps, 100Mbps and 10Mbps over existing Cat5e cabling using a Realtek RTL8126 chip on a PCIe 3.1 x1 slot with low-profile bracket

  • Connectors1 x RJ45
  • DriversUser Manual *1
  • Windows VistaCertified for Windows Vista
  • Features5000 megabits_per_second, 5GB PCIe Network Card *1, Low Prof
  • Package Contents5GB PCIe Network Card *1, Low Profile *1, User Manual *1
  • Disclaimernot_applicable, 1year
  • 5Gbps Multi-Gigabit Ethernet over existing CAT5e cabling
  • PCIe 3.1 x1 interface fits x1 through x16 slots
  • Realtek RTL8126 chipset supports 5G, 2.5G, 1G, 100Mbps, 10Mbps
  • Low-profile bracket included for compact case builds
  • Works with Windows 7 through 11 and Linux out of the box

5Gbps PCIe 3.1 x1 network card

This single-port adapter adds a copper RJ45 Ethernet port to a desktop or server through a PCIe 3.1 x1 lane. The Realtek RTL8126 chipset negotiates speeds of 5G, 2.5G, 1G, 100Mbps and 10Mbps over existing CAT5e cabling up to 100 metres. Both full-height and low-profile brackets are included for flexible case fitment.

Ideal for multi-gig upgrades on standard desktops

The card suits owners of Windows 7 through 11 or Linux systems who want 5Gbps wired throughput without recabling. It works in any x1, x2, x4, x8 or x16 slot and supports PXE boot and RealWoW remote wake-up. Builders needing fibre connectivity, more than one port or Wi-Fi capability should consider other solutions.

Verify slot, OS and cabling before ordering

Confirm the motherboard has a free PCIe 3.1 x1 or wider slot and that the chosen bracket matches the case profile. Ensure the operating system is listed as compatible and that the network switch or router supports 5GBASE-T or NBASE-T speeds. Existing CAT5e runs must meet the distance and quality requirements for the target rate.

Highlights

  • 5Gbps Multi-Gigabit Ethernet over existing CAT5e cabling
  • PCIe 3.1 x1 interface fits x1 through x16 slots
  • Realtek RTL8126 chipset supports 5G, 2.5G, 1G, 100Mbps, 10Mbps
  • Low-profile bracket included for compact case builds
  • Works with Windows 7 through 11 and Linux out of the box

Specifications

Connectors1 x RJ45
DriversUser Manual *1
Windows VistaCertified for Windows Vista
Features5000 megabits_per_second, 5GB PCIe Network Card *1, Low Profile *1, User Manual *1, 1year
Package Contents5GB PCIe Network Card *1, Low Profile *1, User Manual *1
Disclaimernot_applicable, 1year

Questions about this item

Does my motherboard need a free PCIe 3.1 x1 slot for this card?

Yes, it installs in any PCIe 3.1 x1, x2, x4, x8 or x16 slot and runs at 8 GT/s.

Will the RTL8126 negotiate 2.5Gbps with my older 2.5G switch?

The card supports 5G, 2.5G, 1G, 100Mbps and 10Mbps, so it will link at 2.5Gbps with compatible equipment.

How can I verify the adapter is running at 5Gbps after installation?

Check the link speed in Windows adapter settings or run ethtool on Linux; it should report 5000 megabits_per_second when connected to a 5GBASE-T port.

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