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ASUS XG-C100C V3

ASUS XG-C100C 10G network adapter card with its heat spreader shown on a white background

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XG-C100C V3, PCIe 3.0 x4, single RJ45

Interface:
PCI Express 3.0 / 2.1 / 2.0 x 4 (V3; V1 is also x4, V2 is x2)
Standards:
IEEE 802.3an 10GBase-T, 802.3bz 2.5G/5GBase-T, 802.3ab 1000Base-T, 802.3u 100Base-TX, 802.1q VLAN, 802.1p QoS
Port:
1x RJ45 for 10/5/2.5/1 Gbps and 100 Mbps over Cat5e or better (ASUS says Cat5e within 30 m for 10 Gbps)

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Package details

Model: XG-C100C V3

PCIe 3.0/2.1/2.0 x4 interface; current revision.

Condition:
Confirm new or reconditioned on the listing
Quantity:
1 unit
Included essentials:
XG-C100C card, short bracket, quick start guide, warranty card

Important limit: 10 Gbps over Cat5e is limited to about 30 m per ASUS's own guidance; Cat6a is safer for longer runs

How many units?

Confirm condition, quantity and included accessories on the retailer’s listing.

Compare versions and packages

Specifications checked November 5, 2026. Full product details

Size and package

Size and placement

Dimensions (per maker specs)
120.5 x 95.28 x 21.59 mm and 120 x 84.6 x 20.5 mm (two listed hardware revisions, without bezel)
Weight
0.089 kg

In the box

XG-C100C card, short bracket, quick start guide, warranty card

Manufacturer specifications

ASUS XG-C100C V3 10GBase-T Network Adapter

A PCIe 10GBase-T network card with a standard RJ45 port that runs 10/5/2.5/1 Gbps and 100 Mbps over ordinary Cat5e-or-better copper cabling.

Which version should you buy?

Selected package: XG-C100C V3, PCIe 3.0 x4, single RJ45.

Selected package

  • XG-C100C V3

    This page

    Model: XG-C100C V3

    What differs
    PCIe 3.0/2.1/2.0 x4 interface; current revision.
    Best for
    The revision this guide recommends.
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Related models and generations

These are different products. Check their specifications separately.

  • XG-C100C V2 Model: XG-C100C V2

    PCIe 3.0/2.1/2.0 x2 interface; fewer lanes.

    Older stock; lane-limited.

  • XG-C100C V1 Model: XG-C100C V1

    PCIe 3.0/2.1/2.0 x4 interface; first revision.

    Original release.

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • The maker's buy link is shared by all three revisions, so confirm the revision with the seller if V3 specifically is wanted.

Why people pick it

  • Standard RJ45 copper port avoids fiber or SFP+ cabling when upgrading to 10 Gbps
  • Backward compatible with 2.5G, 5G, 1G and 100 Mbps networks
  • PCIe 3.0 x4 interface on the V3 revision leaves headroom for 10 Gbps line rate

Know before you buy

  • 10 Gbps over Cat5e is limited to about 30 m per ASUS's own guidance; Cat6a is safer for longer runs
  • Half-size card in a full-height bracket; the low-profile bracket is included for small cases
  • Hardware revisions differ in PCIe lane count (V2 is x2), so used or older stock may not be V3

Full specifications

InterfacePCI Express 3.0 / 2.1 / 2.0 x 4 (V3; V1 is also x4, V2 is x2)
StandardsIEEE 802.3an 10GBase-T, 802.3bz 2.5G/5GBase-T, 802.3ab 1000Base-T, 802.3u 100Base-TX, 802.1q VLAN, 802.1p QoS
Port1x RJ45 for 10/5/2.5/1 Gbps and 100 Mbps over Cat5e or better (ASUS says Cat5e within 30 m for 10 Gbps)
LED indicatorsDual-color speed LED, single-color link/activity LED
QoSBuilt-in quality-of-service automatically prioritizes gaming packets
OS support (maker)Windows 10 and Linux kernel support per the product page
Category (maker)NIC
Dimensions (per maker specs)120.5 x 95.28 x 21.59 mm and 120 x 84.6 x 20.5 mm (two listed hardware revisions, without bezel)
Weight0.089 kg
In the boxXG-C100C card, short bracket, quick start guide, warranty card
Operating temperature0 to 40 C (32 to 104 F)
VersionsV1 (PCIe x4), V2 (PCIe x2) and V3 (PCIe x4) revisions share one product page; ASUS's where-to-buy links a single listing for the model

From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.

Alternatives to consider

QNAP QXG-10G2SF-NXE Dual-port 10GbE SFP+ PCIe Network Expansion Card

QNAP QXG-10G2SF-NXE

Fastest wired port
10 Gbps

A PCIe Gen3 x8 network expansion card with two 10GbE SFP+ ports, built on a Broadcom BCM57412 controller, for QNAP NAS models and Windows, Ubuntu and Windows Server machines.

  • Multi-gig internet
  • Homelab
  • Media server
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