QNAP QXG-5G4T-111C Quad-Port 5GbE PCIe Network Expansion Card

Overview

The QNAP QXG-5G4T-111C is a quad-port 5 Gigabit Ethernet PCIe network expansion card designed to enhance the connectivity of desktops, servers, or QNAP NAS devices. It fits into a PCIe 3.0 x4 slot and provides four independent RJ45 ports, each capable of delivering up to 5 Gbps speeds while maintaining compatibility with existing Cat 5e cabling. This card is ideal for users who need to increase network bandwidth, isolate traffic, or consolidate cabling without upgrading their entire network infrastructure.

Key features

• Four 5 GbE RJ45 ports that support multi-gigabit speeds for faster data transfers and reduced bottlenecks
• Automatic speed negotiation down to 2.5 Gbps, 1 Gbps, or 100 Mbps to ensure seamless integration with existing network equipment
• Marvell AQtion AQC111C controller provides stable and low-latency data flow, enhancing performance for demanding tasks
• Includes multiple bracket options—low-profile, full-height, and QNAP NAS-specific—to fit a variety of system form factors
• Driver-free operation on QNAP QTS for quick setup, with easy driver installation available for Windows and Linux systems
• Supports network bonding and VLAN configuration to optimize traffic management and improve network efficiency
• Compatible with standard Cat 5e cabling, allowing cost-effective upgrades without rewiring

Key specs

• Interface: PCIe 3.0 x4
• Network ports: 4 x 5 Gigabit Ethernet RJ45
• Maximum speed per port: 5 Gbps
• Speed negotiation: 5 Gbps, 2.5 Gbps, 1 Gbps, 100 Mbps
• Controller: Marvell AQtion AQC111C
• Compatibility: Windows, Linux, QNAP QTS
• Included brackets: low-profile, full-height, QNAP NAS-specific

Connectivity and compatibility

This expansion card integrates smoothly into existing network environments by supporting multiple Ethernet speeds and standard Cat 5e cabling. It works well with a wide range of operating systems, including Windows and Linux, and is recognized immediately by QNAP QTS without requiring additional drivers. The inclusion of various brackets ensures compatibility with compact desktops, standard towers, and rackmount NAS units, making it a versatile choice for different hardware setups.

Ideal uses and environments

The QXG-5G4T-111C is well suited for creative professionals who handle large 4K media files and need fast, reliable network transfers. IT administrators can benefit from accelerated backup and replication tasks between NAS devices, while power users can enhance their multi-gigabit home or office networks without costly infrastructure changes. Its ability to support VLANs and link aggregation also makes it a strong option for environments requiring traffic segmentation and increased throughput.