When you need a reliable and efficient solution for network connectivity, consider the Usb32000SPT Usb 3.0 to Dual Port Gigabit Ethernet Nic Adapter. This high-speed adapter allows you to add two Gigabit Ethernet ports to your laptop or Ultrabook computer through just one Usb 3.0 port. Designed with an integrated Usb 3.0 passthrough port, this adapter ensures your Usb port remains available for use with external storage devices or other peripherals. Each RJ45 port supports 10/100/1000 Mbps Ethernet and is fully compatible with Ieee 802.3i/u/ab standards, offering you the flexibility to connect to two separate physical networks simultaneously.Leveraging the 5 Gbps speed of Usb 3.0, this dual-port USB Lan adapter provides dedicated gigabit bandwidth to each port. It supports Crossover Detection and Auto-Correction (Auto Mdix), Ieee 802.1Q Vlan Tagging, and up to 4K Jumbo Frame support.