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Small green circuit board with gold edge connector and silver RJ45 port, low-profile metal bracket

LORDWORLD

LORDWORLD 2.5Gbps 2230 NGFF A+E-Key to RJ45 Ethernet Adapter

SKU CH-C3TA-694DZ

Adds 2.5Gbps RJ45 Ethernet to 2230 NGFF A+E-Key slots via Realtek RTL8125B

  • Fits 2230 NGFF A+E-Key slots for easy motherboard integration
  • 5Gbps speeds up to 2.5 times faster than gigabit
  • Realtek RTL8125B chip enables 2.5Gbps with 1Gbps/100M/10M auto-negotiation
  • Low-profile bracket allows installation in compact or standard chassis
  • Works with Windows 11, Windows 10 and Linux systems

Target hardware and audience

This adapter adds a 2.5Gbps RJ45 port to desktop motherboards that expose a 2230 NGFF A+E-Key slot. It suits builders who need faster wired throughput than a standard 1Gbps link without occupying a PCIe expansion slot.

Build and daily use

The low-profile bracket keeps the card flush in compact chassis and leaves room for neighbouring components. A Realtek RTL8125B controller drives the port and auto-negotiates down to 100M or 10M when the cabling or partner device requires it. Cat5e or better UTP cable runs up to 100 metres are supported. The board includes PXE boot, Auto MDIX, VLAN tagging to IEEE 802.1Q, full-duplex flow control and Layer 2 priority encoding. Windows 10, Windows 11 and Linux kernels recognise the device without extra drivers.

Upgrade path and fit

The card replaces an on-board 1Gbps port when the board has a free A+E-Key 2230 slot and the user wants 2.5Gbps throughput for large file moves, HD streaming or low-latency gaming. It does not fit B-Key or M-Key slots, so boards lacking the correct keying cannot use this adapter. The jump is worthwhile when the switch or router already offers 2.5Gbps uplinks and the existing 1Gbps link is the bottleneck.

Highlights

  • Fits 2230 NGFF A+E-Key slots for easy motherboard integration
  • 5Gbps speeds up to 2.5 times faster than gigabit
  • Realtek RTL8125B chip enables 2.5Gbps with 1Gbps/100M/10M auto-negotiation
  • Low-profile bracket allows installation in compact or standard chassis
  • Works with Windows 11, Windows 10 and Linux systems

Specifications

BrandLORDWORLD

Questions about this item

Does the 2.5Gbps NGFF A+E-Key adapter reach 2.5GBASE-T speeds over Cat5e cable?

Yes, the Realtek RTL8125B controller supports IEEE 802.3bz 2.5GBASE-T and auto-negotiates down to 1Gbps, 100M or 10M over standard Cat5e or better UTP up to 100m.

What physical slot and bracket does this 2230 NGFF card require?

It fits a 2230 NGFF A+E-Key M.2 slot only — B-Key and M-Key slots are not compatible — and ships with a low-profile bracket for slim chassis.

Which driver step is often missed when installing the RTL8125B adapter on Windows 11?

After seating the card in the A+E-Key slot and attaching the bracket, install the Realtek RTL8125B driver before expecting the 2.5G link to appear in Device Manager.

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