PCIe x1 to 4-port Gigabit Ethernet adapter, for Intel 82576 chipset. Dedicated for servers/workstations/soft routers. Full-duplex/16 queues/virtualization support/VMDq technology. PCIe slot auto-sensing. Four uses in one card: Diskless boot, ESXi virtualization, server expansion, workstations. Compatible with for Windows/for Linux/for VMWare and other operating systems! Low Latency + High Throughput Product Name: PCIe x1 to Quad-Port Gigabit Server Network Adapter Model: PI76R41 Chip Model: for Intel 82576 Interface Type: PCI-E x1 Network Interface: RJ45 x4 Bus Type: PCI Express x1; compatible with x4, x8, x16 Transmission Rate: 10/100/1000Mbps auto-sensing Power Consumption: 2.8W Suitable Scenarios: Servers/Workstations/Virtualization/Soft Routers Operating Temperature: 0°C~55°C (32°F~131°F) Storage Temperature: -400°C ~ 70°C (-40°F~158°F) Storage Humidity: 35°C 90% non-condensing relative humidity Dimensions: 155x64mm Weight: 130g (net weight) System Support: for Windows, for Linux, for VMware, etc. Color: As Shown Material: ABS Package Contents: 1 * Network card