DIEWU PCIe Gigabit Network Card Desktop Ethernet PCI-E Computer 10Gb Network Card High-Speed Independent Network Card 1000M 2.5G Built-in Single/Double/Four Fiber Port Server Intel Network Card

No. To achieve full 10Gbps speed, you must connect it to a USB 3.2 Gen 2×2 (20Gbps)​ port or Thunderbolt 4/USB4​ port. Standard USB 3.2 Gen 2 (10Gbps) ports will limit speed to ~5Gbps due to shared bandwidth.

• Windows 10/11: Requires latest Realtek RTL8159 driver (download from Realtek’s official site).
• macOS: Needs third-party driver (e.g., from CableCreation or Realtek’s Mac driver).
• Linux (v4.10+): Kernel 4.10+ includes basic support; for full 10G performance, install/update r8152driver manually.

Yes! It works well with Synology, QNAP, and other 10G-capable NAS devices. Ensure your NAS has a 10G Ethernet port and use Cat6a/Cat7 cable for best results.

Use USB-C to USB-C​ or USB-A to USB-C​ cables that support 10Gbps or higher. Avoid old USB 2.0 cables — they will cause speed drops or disconnections.

• Using wrong USB port (not 3.2 Gen 2×2 or Thunderbolt).
• Using low-quality or incompatible cable.
• Outdated or missing driver.
• Connected to a 1Gbps switch or router.
  ✅ Fix: Check cable, port, driver, and network device compatibility.