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Q: What chipset does this network card use, and why does it matter?
A: This card uses the Intel 82576 Gigabit Ethernet Controller, a proven enterprise-grade chipset widely recognized for its stability, low CPU overhead, and broad OS compatibility. Driver installation is required before use — please download the driver package from the product listing and install it on your system to ensure full functionality.
Q: Is this PCIe network card compatible with my motherboard's PCIe x4, x8, or x16 slot?
A: Yes. Although the card uses a PCIe x1 connector, it is fully compatible with PCIe x4, x8, and x16 slots due to the PCIe standard's backward compatibility. You can install it in any available PCIe slot on your server or workstation motherboard.
Q: Does this network card support link aggregation (LACP / 802.3ad) and NIC teaming?
A: Yes. The Intel 82576 supports IEEE 802.3ad Link Aggregation Control Protocol (LACP) and NIC teaming. You can bond multiple ports together for increased throughput (up to 4 Gbps combined) or configure active-passive failover for high-availability network setups.
Q: What operating systems are supported? Do I need to install drivers?
A: Driver installation is required before use. The card supports Windows 10/11, Windows Server 2012-2022, major Linux distributions (Ubuntu, CentOS, Debian, etc.), and VMware ESXi. Please download the driver package from the product listing and install it on your system before use to ensure full functionality and stability.
Q: Does the card support Jumbo Frames and hardware offloading features?
A: Yes. The Intel 82576 supports Jumbo Frames up to 9KB, as well as hardware TCP/UDP/IP checksum offloading, Large Send Offload (LSO), and Receive Side Scaling (RSS). These features significantly reduce CPU load and improve throughput in high-traffic server environments.
Q: Is a low-profile bracket included? Can this card fit in a 1U rack server?
A: Yes, a low-profile bracket is included in the package. This allows the card to be installed in compact 1U/2U rack servers and small form-factor (SFF) workstations that require a half-height bracket. The standard full-height bracket is pre-installed on the card.
Q: What is the power consumption of this 4-port Gigabit NIC?
A: The card consumes only 2.8W under typical operating conditions. This ultra-low power design makes it suitable for always-on server environments and energy-efficient home lab builds where power budget is a concern.
Q: What is the difference between this card and a 2-port Intel 82576 NIC?
A: This card features 4 independent RJ-45 Gigabit ports on a single PCIe x1 slot, doubling the port density compared to a standard 2-port 82576 card. It is ideal when you need more network interfaces but have limited PCIe slots — common in dense server builds, multi-WAN routers, and virtualization hosts running many VMs that each require dedicated network access.
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