We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green PCB card with silver heatsink and two RJ45 ports

SMUGDESK

SMUGDESK Dual-Port 2.5G PCIe x1 Ethernet NIC PCI Express Realtek RTL8125BG

SKU CH-S95S-3M88R

A dual-port 2.5G PCIe x1 network card with Realtek RTL8125BG controller adds two 2500Mbps RJ45 links for NAS aggregation or soft-router builds

  • Dual RJ45 ports deliver 2.5Gbps bandwidth for faster file transfers and NAS links
  • Realtek RTL8125BG controller auto-negotiates 2.5G, 1G, 100M and 10M speeds over Cat5e or Cat6
  • PCIe 2.1 x1 interface fits x1, x4, x8 or x16 slots for simple desktop installation
  • Passive heatsink and per-port LEDs keep the card cool and show link status at a glance
  • VLAN tagging, EEE power saving, checksum offload and 9KB Jumbo Frames reduce CPU load during heavy traffic

Dual-port 2.5G Ethernet NIC

The SMUGDESK card adds two independent 2.5GbE RJ45 ports to a desktop PC through a single PCIe x1 slot. It uses the Realtek RTL8125BG controller to deliver 2500Mbps bandwidth per port, doubling the throughput of standard gigabit adapters for NAS links, soft-router builds or high-speed file transfers.

Check your motherboard slot and OS

Verify that a free PCIe x1, x4, x8 or x16 slot is available; the card fits any of them thanks to PCIe 2.1 x1 electrical design. Ensure your operating system is Windows 10, Windows 11, Windows Server, Ubuntu, CentOS, Debian or VMware, all of which have driver support listed by the manufacturer.

Suits home and small-office upgrades

Builders needing two 2.5G wired links for link aggregation or replacing a failed onboard port will benefit. Buyers who require more than two ports, fibre connectivity, 10GbE speeds or Power over Ethernet should look at other solutions.

Highlights

  • Dual RJ45 ports deliver 2.5Gbps bandwidth for faster file transfers and NAS links
  • Realtek RTL8125BG controller auto-negotiates 2.5G, 1G, 100M and 10M speeds over Cat5e or Cat6
  • PCIe 2.1 x1 interface fits x1, x4, x8 or x16 slots for simple desktop installation
  • Passive heatsink and per-port LEDs keep the card cool and show link status at a glance
  • VLAN tagging, EEE power saving, checksum offload and 9KB Jumbo Frames reduce CPU load during heavy traffic

Specifications

No published specifications for this item yet.

Questions about this item

What cables do I need to connect the two RJ45 ports on this card?

Standard Cat5e or Cat6 Ethernet cables work with both 2.5G ports; no special cabling is required.

Should I choose this dual-port card over a single-port 2.5G NIC for my desktop?

Choose this card if you need two independent 2.5G links — for example, a NAS trunk and a separate gaming line — otherwise a single-port model saves a slot.

Will the 2500Mbps rating actually reach 2.5Gbps inside my PC?

The PCIe 2.1 x1 bus provides enough bandwidth for full 2.5Gbps line rate on each port when paired with a compatible switch and Cat5e/Cat6 cable.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.