Sold as 1 Each. Efficient dual connectors with USB A Male and RJ45 female for better connectivity. Compatible with IBM compatible Pentium-233 MHz or faster PC or Mac, 64MB RAM or more, one available USB-port, Windows 2000, XP, Vista, 7, and 8, Mac OS X 10.x. Comes with a 1-year limited warranty. USB 2.0 interface is compatible with network devices. Energy efficient as it supports suspend mode and remote wakeup via link-up and magic packet. Data transfer rate of 480 Mbps enhances internet quality. Offers enhanced connectivity with its 2 terminals. Equipped with diagnostic LEDs for user convenience. Compliant Standards: RoHS, IEEE 802.3, IEEE 802.3u.