Features 1、MULTI DEVICE CONNECTIVITY: 4 ports support full half duplex adaptive, meeting the needs of multiple device connections, providing stable high speed network transfer. 2、PROFESSIONAL AND RELIABLE: Compliant with PCIe x4 v2.1 Specification, supports IEEE 802.3ab standard via Category 5 twisted pair cable, providing optimal network throughput. 3、STABLE PERFORMANCE: Equipped with the for Broadcom BCM5719 chipset, this network card supports a transfer rate of 10 100 1000Mbps. Suitable for desktop computers, workstations, and servers. 4、IMPROVED MANAGEABILITY: Designed for enterprise and data center environments, providing energy efficient Ethernet support and IEEE 1588 hardware timestamp support, enhancing system manageability. 5、WIDE COMPATIBILITY: Compatible with various operating systems such as for Wins Server, for Linux, and for VMware ESX ESXi, facilitating widespread application and accessibility. Specification Item Type: Gigabit Ethernet Network Adapter Material: PCB Suitable Network Type: Gigabit Ethernet Chipset: For Broadcom BCM5719 Transfer Rate: 10 100 1000Mbps Bus Type: PCIe X4 Transfer Medium and Interface: RJ45 Interface Quantity: 4 Full Duplex Half Duplex: Full Duplex Half Duplex Adaptive LED Indicators: 8 LED Indicators Application: for Desktop PC, Workstation, Server Operating System: For Wins Server 2016 2012 R2 2012 2008 R2 2008 2003 R2 2003, for XP Professional, for Wins 10 8 8.1 7 Vista, for Linux Stable Kernel version 3.x, 2.6.x, for Red Hat Enterprise, for Linux 5, 6, for SUSE for Linux Enterprise Server 10, 11, for FreeBSD 9, for VMware ESX ESXi Package List 1 x Network Card 1 x Short Bracket