Brand New ASUS USB-AC53 Dual-Band USB Wi-Fi Adapter Performance: Dual-band AC1200 speeds (up to 300 Mbps on 2.4GHz and 867 Mbps on 5GHz). Design: Ultra-compact "Nano" form factor, designed to remain plugged into a notebook, projecting only a few millimeters, according to YouTube and Amazon.com. Technology: 2x2 MU-MIMO technology to boost performance when connected to compatible routers. Interface: USB 2.0, which may limit maximum theoretical speeds compared to USB 3.0, note PCMag. Compatibility: Supports Windows 10/8.1/8/7/XP and macOS