Description
UGREEN Gigabit PCI Express Network Adapter (30771)
Add a wired 10/100/1000 Mbps Ethernet port to a compatible Windows PC through a PCI Express slot. The card suits desktops, workstations, and servers that need Gigabit connectivity, redundancy, or a port where none exists.
Applications
- PCI Express Gigabit Ethernet on motherboards, notebooks, or embedded platforms where a PCIe NIC is appropriate
- Extra Ethernet on a workstation or server for redundancy or bridging
- Networking capability on older systems without built-in Ethernet
Interface and standards
Fits PCI Express x1, x2, x4, x8, or x16 sockets—PCI Express only; not for legacy PCI slots. Compliant with IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab, with 802.1Q VLAN tag support. Maximum data rate up to 1000 Mbps per direction (2000 Mbps aggregate full duplex) versus 10/100 links.
Hardware features
| Transceiver | Integrated 10/100/1000M |
| PCI Express | 1.1; 1-Lane 2.5 Gbps bus |
| Link | Auto-Negotiation with Next Page; crossover detection and auto-correction; pair swap/polarity/skew correction |
| Power saving | Power down/link down/PHY disable; EMAC-393 ECMA ProxZzzy for sleeping hosts; LTR and OBFF |
| Wake | 16-set 128-byte wake-up frame pattern matching; Microsoft WPD (Wake Packet Detection) |
| Other | Embedded OTP memory; on-chip TX/RX buffers; PCI MSI and MSI-X; 25 MHz or 48 MHz oscillator |
Physical installation
Includes a standard profile bracket plus an additional 8 cm low-profile bracket for small form factor or HTPC cases. After install, the adapter may appear in Device Manager as Realtek PCIe Family Controller #2.
Operating systems
Compatible with Windows 11, 10, 8/8.1, 7 (32- and 64-bit), Vista, XP, 2000, ME, and 98SE. Does not support Linux or macOS. Download and install the driver before use.
Important notes
- Power: 5 V supply only—do not connect a 12 V source; do not insert a SATA power connector reversed into the card
- Power off the PC before installing the PCIe card
- Package: UGREEN Gigabit PCI-E network card, driver disk, 8 cm low-profile bracket

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