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

The QNAP QXG-5G4T-111C is a PCIe expansion card that equips a desktop, server, or QNAP NAS with four independent 5 Gigabit Ethernet ports. Designed for a PCIe 3.0 x4 slot, it delivers a straightforward way to multiply network bandwidth, consolidate cabling, or isolate traffic without replacing existing Cat 5e wiring.

Each port runs at up to 5 Gbps and automatically negotiates down to 2.5 Gbps, 1 Gbps, or 100 Mbps to match the rest of your infrastructure. Behind the scenes, the Marvell AQtion AQC111C controller manages the data flow, helping creative teams move large media files quickly, letting IT staff shorten backup windows, and giving virtualization hosts added throughput for multiple virtual machines.

Installation is simple. A low-profile bracket arrives pre-installed for compact cases, while full-height and QNAP-specific brackets are in the box for standard towers or rackmount NAS units. Windows and Linux systems only need a quick driver install, whereas QNAP QTS recognizes the card immediately, so you can be bonding links or carving out VLANs in minutes.

Whether you are a content creator who shuttles 4K footage, an administrator who wants faster replication between NAS appliances, or a power user who relies on multi-gig home networking, this card offers a practical, cost-effective performance boost without a full-scale infrastructure overhaul.

• Adds four 5 GbE RJ45 ports through a PCIe 3.0 x4 slot
• Compatible with Cat 5e cabling for up to 5 Gbps per port
• Marvell AQtion AQC111C controller for stable, low-latency transfers
• Includes low-profile, full-height, and QNAP NAS brackets
• Works with Windows, Linux, and QNAP QTS (driver-free on QTS)
• Ideal for media production, backup acceleration, and multi-gig home or office networks