HIGH PERFORMANCE: 2.5GbE USB A to Ethernet Adapter allows you to securely connect to high-speed Networks and is backward compatible with existing Gigabit LANs NBASE-T & 2.5GBASE-T: USB 3.1 Ethernet adapter offers bandwidth for content creators & power users on high-performance Laptops/Workstations incl. Lenovo ThinkPad X1 Carbon Dell XPS HP EliteBook/ZBook USB 3.0/3.1 Type-A 1x RJ45 5 Gbps Multi-Gigabit 3 Speed 2.5G/1G/100 Mbps auto-negotiation Realtek RTL8156 NBASE-T/2.5GBASE-T 16K Jumbo Frame WoL VLAN USB Powered 2Yr Warranty MAXIMUM BANDWIDTH: Leverage NBASE-T w/ USB-A for 2.5 Gb/s speeds over existing Cat 5e Cables w/o the expense of Cat 6A or Fiber; 3 Speed Auto-Negotiation always provides max bandwidth COMPATIBILITY: Supports many OS and Hypervisors incl. Windows 7/8.1/10, Windows Server 2008 R2/2012 R2/2016/2019, Linux LTS Kernel 4.19+, MacOS 10.11 to 10.14