Features: 1.Multi Functional: 4 port internet card supports offload technology, including TCP segmentation, TCP/UDP/IP checksum and RSS, which can provide the best network throughput and reduce the utilization of host processor, thus improving the overall performance of the system. 2.Wake on LAN: Network card meets ACPI requirements for Wake on LAN (WOL), supports statistics of SNMP MIB II and Ethernet MIB, and supports jumbo frames with a maximum packet size of 9.6 KB. 3.Hardware Assistance: 4 port 10/100/1000BASE T Ethernet server adapter, hardware assistance for time synchronization implementation of IEEE 1588 and IEEE 802.1AS 4.MSI MSI X Functions: Gigabit server network card supports MSI and MSI X functions, with up to 17 MSI X vectors, 17 receiving queues and 16 sending queues per port. 5.Multiple Supports: Gigabit server network card supports ECC error detection and correction on internal SRAM, conforms to PCIe x4 v2.1 , and supports IEEE 802.3ab standard through category 5 twisted?pair cable. specification:Item Type: Ethernet Network Card Adapter Material: PCB Network: Gigabit Ethernet Main Chipset:BCM5719 Type of Bus: PCI Express X4 v2.1 Transmission Medium: 4 x RJ45 Copper Cable Interface Network Function: A Four Port 10/100/1000BASE T for OS X with Integrated Phy, and Its Gigabit Media Related Interface (MDI) Differential Signal is Connected to the Four Port RJ 45 Connector. BCM5719 4P: Control WOL Power Switch Circuit Operating Temperature: 0C to 55C Air Flow Requirement: (LFM) 0 Storage Temperature:-40C To+65C Humidity: 5% to 95% Storage and Working Humidity Without Condensation. LED Indicator: Yellow:10/100 Mb/s, Green:1000 Mb/s, Green:Flashing when the Line is Active. PackageList:1 xEthernetNetworkCardAdapter 1 x Short Baffle 1 x User Manual 1 x CD