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Green printed circuit board with a silver RJ-45 port and gold PCIe edge connector

EN-Labs

EN-Labs PCIE100MNW 10/100Mbps PCIe LAN expansion card

SKU CH-CE97-2S19F

Adds a 10/100 Mbps RJ45 Ethernet port via PCIe x1 using a Realtek RTL8211 chipset with Wake-on-LAN and Energy Efficient Ethernet support

  • Key featuresRealtek RTL8211 chipset Integrated 10/100 Mbit/s transceiver
  • Adds wired networking via a single PCIe x1 slot
  • Realtek RTL8211 chipset handles 10/100 Mbps Ethernet
  • IEEE 802.3u and 802.3 standards ensure broad compatibility
  • Wake-on-LAN support powers the PC remotely
  • Energy Efficient Ethernet draft 3.2 reduces idle power draw

What it is and who it fits

The EN-Labs PCIE100MNW adds a single 10/100Mbps RJ-45 port through a PCIe x1 slot. It suits older desktops, thin clients or embedded builds that need a basic wired link without Gigabit cost. Builders who want 1Gbps or multi-gig throughput should choose a different adapter.

Capacity and headroom

The Realtek RTL8211 transceiver handles 10Base-T and 100Base-TX traffic up to 100Mbps full-duplex. It saturates cleanly on legacy 100Mbps switches but cannot exceed that ceiling, so large file moves or modern backup jobs will hit the bandwidth wall quickly.

Thermals noise and power

The card draws minimal power from the PCIe bus and runs passively with no fan. In typical desktop airflow it stays cool to the touch and adds no audible noise to the system.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 92% of the 891 comparable items (median $30.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameEn-Labs
Model namePCIE100MNW

Questions about this item

Will the EN-Labs PCIE100MNW work in my older motherboard that only has PCIe 1.0a slots?

Yes, the card is compliant with PCI-Express Revision 1.0a and uses a single-lane x1 interface, so it will function in any PCIe 1.0a, 2.0 or 3.0 slot including x4, x8 or x16 physical connectors.

How can I verify the Realtek RTL8211 chipset is active and linked at 100Mbps after installation?

Check the adapter properties in Device Manager or your OS network settings; the link speed should read 100 Mbps full duplex and the driver provider will be listed as Realtek for the RTL8211 controller.

Does the EN-Labs PCIE100MNW include a low-profile bracket for small-form-factor cases or only the standard full-profile cover?

The supplied accessory is a full-profile PCI slot cover; a low-profile bracket is not included and must be purchased separately if your chassis requires it.

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