The QXG-2G4T-I225 offers four 2.5GBASE-T connection ports that support 2.5G, 1G, 100 Mbps and 10 Mbps speeds. It is a PCIe Gen2 x4 card that can be installed in a QNAP NAS or a Windows?/Linux? computer. Existing CAT 5e cables can be used with the QXG-2G4T-I225 for an immediate upgrade to a 2.5GbE network. The QXG-2G4T-I225 also supports Windows Server 2019 and provides efficient server management with support for Intel Teaming (Link aggregation), PXE, Intel AMT, Wake on LAN and VLAN. Technical parameters Controller: Intel Ethernet Controller I225-LM Connector: RJ45 PCIe interface: PCIe Gen2 x4 Transmission speeds: 2.5 Gbps/1 Gbps/100 Mbps/10 Mbps Supported Operating Systems: QTS 4.4.2 or later, Windows 10 (driver required), Ubuntu (driver required), Windows Server 2016/2019 (driver required) Bracket: Pre-installed low profile bracket Port and cable: RJ-45; via CAT-5 cable Supported features: PXE, Wake-On-LAN (WoL), 9k jumbo frame, 802.1AS-rev/1588, 802.1Qav/802.1Qbv, Time Sensitive Networking (TSN), RSS + MSI-X, Teaming & VLAN support, Intel AMT Package contents 1 x network card (pre-installed low profile holder) 1 x QIG 2 x mounts (full height and specialized for QNAP NAS) Suitable for models: PC/Server or NAS with PCIe slot