QNAP QXG-5G4T-111C

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.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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