QNAP QXG-100G2SF-E810 Dual-Port 100GbE Network Expansion Card
Overview
The QXG-100G2SF-E810 is a dual-port 100GbE network expansion card built around the Intel Ethernet Controller E810 and a PCIe 4.0 host interface. It delivers up to 200 Gbps of aggregate throughput across two QSFP28 ports — the right answer when a single 10GbE or 25GbE uplink has become the bottleneck between a high-density NAS and the rest of the network. With a low-profile form factor, it installs in space-constrained tower and rackmount enclosures where a full-height card won't fit. PCIe 4.0 doubles the per-lane bandwidth of Gen 3, so the slot itself won't choke throughput even at sustained full-speed transfers across both ports simultaneously. The E810 controller is a production-grade silicon with mature driver support across Linux and Windows Server environments, which matters for long-term stability in always-on NAS and server deployments. Browse the full QNAP network and storage line for compatible host systems.
Compatibility
This card is designed for installation in QNAP NAS appliances and servers equipped with a PCIe 4.0 (or PCIe 3.0, backward-compatible at reduced bandwidth) x8 or x16 expansion slot. Compatible host families include QNAP high-capacity rackmount NAS units in the TS-x88, TVS-hx88, TVS-hx77, and ES-series lines that expose a PCIe expansion bay. It is also suitable for installation in standard x86 tower or rackmount servers meeting the same slot and form-factor requirements. QSFP28 transceivers or direct-attach copper (DAC) cables are required for physical connectivity — neither is included. Verify your switch or upstream device supports 100GbE QSFP28 ports before ordering. For a compatible 100GbE-capable network switch, check the switch catalog to confirm port type and speed matching.
Installation Notes
The low-profile bracket is the installed default; confirm your chassis ships with a low-profile slot opening or swap to a full-height bracket if one is included. PCIe 4.0 requires the host system's slot to support Gen 4 to realize full bandwidth — installing in a Gen 3 slot is electrically compatible but caps per-lane throughput at Gen 3 rates. Install the appropriate NIC driver for your OS before connecting the card to the network fabric. For QNAP NAS hosts, confirm QTS or QuTS hero firmware supports the E810 controller on your specific model prior to installation.
