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Green PCB network card with single silver RJ-45 port and gold PCI-E edge connector

ASUS

ASUS XG-C100C 10G network card PCI-E x4 RJ-45

SKU CH-YSK1-DDAFX MPN XG-C100C

A PCI-E x4 network adapter adding a single RJ-45 port for 10 Gbps Ethernet with backwards compatibility down to 100 Mbps and built-in QoS

  • Interface typePCI-Express
  • Supported standardsIEEE 802.3an 10GBASE-T IEEE 802.3u 100Base-TX Fast Ethernet
  • Indicator lightsDual color Speed LED Single color Link / Act LED
  • Temperature rangeOperating Temperature: 0 to 40 degree Celsius (32 to 104 deg
  • Key featuresPort Attributes: RJ-45 for 1 × 100 Mbit/s / 1 Gbit/s / 2.5 G
  • Product dimensions0.81 in × 3.33 in × 4.72 in
  • Up to 10 Gbps throughput for data-intensive workloads
  • Backwards compatible with 100 Mbps through 5 Gbps networks
  • Built-in QoS prioritises critical traffic automatically
  • PCIe x4 interface fits standard desktop expansion slots
  • Supports Windows 10 down to 7 and Linux kernels 3.2 to 4.4

10GBASE-T PCIe x4 Adapter

The ASUS XG-C100C is a 10 Gigabit Ethernet network card for desktop PCs that need faster wired throughput than standard gigabit links. It connects through a PCI Express x4 slot and presents a single RJ-45 port supporting 100 Mbps, 1 Gbps, 2.5 Gbps, 5 Gbps and 10 Gbps speeds. The card targets users moving large files, running local servers or backing up to network storage who want a simple copper upgrade without changing cabling. It is not suited for buyers who need fibre connectivity or multiple ports on one bracket.

Built-in QoS and Jumbo Frame Support

The adapter includes hardware Quality of Service that can prioritise selected traffic classes, helping latency-sensitive applications share the link with bulk transfers. Jumbo frames up to 9 KB reduce CPU overhead on large payloads. Dual-colour speed LEDs and a link/activity LED give immediate visual confirmation of the negotiated rate. No separate management utility or driver disc is mentioned in the specifications.

Low-Profile Installation on Windows and Linux

The half-height bracket fits low-profile chassis, and the card draws power solely from the PCIe slot. Supported operating systems include Windows 10, 8.1, 8, 7 and Linux kernels 3.2, 3.6, 4.2 and 4.4. Common issues arise when the slot negotiates fewer than four lanes or when older kernels lack the required driver backports, so verify lane width and kernel version before installing.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $67.99
Cheaper than about 58% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameASUS
Model nameXG-C100C
Connectivity
Supported standardsIEEE 802.3an 10GBASE-T
IEEE 802.3u 100Base-TX Fast Ethernet
IEEE 802.3ab 1000BASE-T Gigabit Ethernet
IEEE 802.3az Energy Efficient Ethernet
IEEE 802.1p Priority Queuing
Ports & slots
Interface typePCI-Express
Size & build
Product dimensions0.81 in × 3.33 in × 4.72 in
Product weight0.2 lb (0.09 kg)
Shipping weight0.23 kg
Package size168 × 147 × 48 mm
Environment & compliance
Temperature rangeOperating Temperature: 0 to 40 degree Celsius (32 to 104 degree Fahrenheit)
Storage Temperature: -40 to 85 degree Celsius (-40 to 185 degree Fahrenheit)
More details
Indicator lightsDual color Speed LED
Single color Link / Act LED

Questions about this item

What ongoing maintenance does the ASUS XG-C100C need after installation?

No moving parts or filters are present; occasional dust removal from the heatsink and RJ-45 port keeps airflow clear.

Which limit appears first when the card runs at 10 Gbps continuously?

The PCIe x4 interface caps sustained throughput at the lane bandwidth, so the bus saturates before the RJ-45 port reaches its thermal ceiling.

How loud and hot does the XG-C100C get during all-day operation?

Passive cooling means zero fan noise; the card is rated for 0–40 °C ambient, so case airflow keeps it within spec.

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