Three USB and one RJ-45 Lan port that supports 100Mbps/BASE-T performance. Compatible with USB2.0/1.1, transmission rate 480Mbps. Ethernet network supports 100Mbps high-speed transmission. Support TCP/IP, NetBEUI, IPX/SPX. Support for Windows 98SE/2000/ME/XP/Vista/7/8/10, for Mac OS, for Linux (Kernel). Free for Android 4.0 and above, plug and play. 3 USB ports, and it can also be connected to a 5V power supply to provide more current. Network card function powered by USB, low power consumption, no external power required. Item Name: USB Hub Lan Adapter Material: Plastic Features: Plug&Play, Lightweight, High Speed Size: 74mm x 24mm x 12mm/2.91" x 0.94" x 0.47" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x USB Hub Lan Adapter