It is a Gigabit Ethernet PCI network interface card with a single RJ45 Port that complies with all IEEE 802.3 standards. It provides a high bandwidth 1Gb network speed that fully supports high-end servers. In addition, the ADD-PCI-1RJ45 supports high level VLAN filtering. Based on the Realtek RTL8169 chip set, it is compatible with Windows, Linux and #8220;including Mac OSX-", FreeBSD, and VMware operating systems. The single RJ45 Port slot operates over copper patch cable, allowing an operating distance of 100m. AddOn Computer's Network Interface Cards are 100 compliant for all of your networking needs. Now you have a cost effective solution to your network upgrade needs. Specification General Device Type - Network adapter. Form Factor - Plug-in card. Interface and #8220;Bus-" Type - PCI. Networking Ports - 1000Base-TX x 1. Connectivity Technology - Wired. Cabling Type - Ethernet 1000Base-TX. Data Link Protocol - Gigabit LAN. Data Transfer Rate - 1 GBps. Expansion/Connectivity Interfaces - 1 x 1000Base-TX - RJ-45.