Made of ABS material,long service life. Portable and lightweight, easy to carry for use. Built-in high performance smart antenna. It supports operation systems for Windows XP/Vista/Win7/Win 8/Mac/Linux. Item Name: USB Network Card Material: ABS Supported Protocol and Standard: IEEE 802.11n Interface: USB 2.0, USB 1.1 Frequency Range: 2.4GHz - 2.4835GHz Working Channel Number: 14 Data Modulation: OFDM/CCK/16-QAM/64-QAM Operation Mode: Common Control Type (Infrastructure), Pear to Pear (Ad-Hoc) Transmission Rate: 150Mbps (Max) Spread-spectrum Technique: DSSS Sensitivity: 135M: -72dBm at 10% PER; 130M: -72dBm at 10% PER; 108M: -72dBm at 10% PER; 54M: -72dBm at 10% PER; 11M: -85dBm at 8% PER; 6M: -88dBm at 10% PER; 1M: -90dBm at 8% PER RF Power: 15dbm (Max) Antenna: 2dBi (Built-in Smart Antenna) Transmission Distance: Depend on Environment Supported Operation System: for Windows XP/Vista/Win7/Win 8/Mac/Linux Working Voltage: DC 5V +- 0.2V LED Indication: Status Features: Portable, Mini, Built-in Smart Antenna,Easy to Carry Length: 20mm/0.79" (Approx.) Width: 15mm/0.59" (Approx.) Height: 6mm/0.24" (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: 4 x 1 x USB Network Card