Features:• Ultra mini size, portable and compact design• 2.4GHz ISM band, unlicensed operation• Compliant with IEEE 802.11b/g/n • Provides up to 300Mbps download and 300Mbps upload data rate• Wi-Fi Protected Setup (WPS) support• Supports WEP 64/128-bit, WPA / WPA2, WPA-PSK / WPA2-PSK (TKIP/AES encryption)• Supports Software AP mode• Supports Wireless QoS (WMM)• USB 2.0 attached interface• Supports most popular operating systems including Windows 2000, XP, Vista, Windows 7, Windows 8,  Linux, and MAC OS X.Technical Specifications:• Interface: USB 2.0, Type-A• Antenna Type: Internal Omni-directional PIFA Antenna• Antenna Gain: 2dBi• Button: WPS Push Button (PBC mode) to launch WPS connection• LED: 1 x Link / Active (Green)• Operation Voltage: 5V DC, power input from USB port• Dimension (W x D x H): 29 x 14.4 x 6 mm• Standards Conformance: IEEE 802.11n standard compliant, IEEE 802.11b/g backwards compatible• RF Modulation: DBPSK, DQPSK, CCK, OFDM• Frequency Band2.4 ~ 2.4835 GHz• Operating Channel: America / FCC: 2.414~2.462GHz (11 Channels), Europe / ETSI: 2.412~2.472GHz (13 Channels), Japan / TELEC: 2.412~2.484GHz (14 Channels)• Data Rate: 802.11b: 11, 5.5, 2 and 1Mbps with auto-rate fall back, 802.11g: 54, 48, 36, 24, 18, 12, 9 and 6Mbps , 802.11n (20MHz): up to 144.4Mbps , 802.11n (40MHz): up to 300Mbp• Wireless Transmit Power (EIRP): 802.11b: 18 ± 1dBm, 802.11g: 15 ± 1dBm, 802.11n: 13 ± 1dBm• Receiver Sensitivity: IEEE 802.11b: -85dBm , IEEE 802.11g: -70dBm , IEEE 802.11n: -68dBm• Operating Mode: Ad-Hoc / Infrastructure, Soft AP• Encryption Security: WEP 64/128-bit, WPA / WPA2 (TKIP/AES), WPA-PSK / WPA2-PSK (TKIP/AES)• Wireless Advanced: Supports 802.11e WMM (Wi-Fi Multimedia), Supports Software/Hardware WPS (Wi-Fi Protected Setup)• Management Tool: The utility included in the package or Windows XP Zero Configuration utility• Operating systems: Windows 2000/XP (x86/x64) / VISTA (x86/x64) / Windows 7 (x86/x64) / Windows 8, Linux Kernel 2.4 /2.6, Macintosh 10.4/10.5/10.6• Certification: EmissionCE, FCC• Operating Temperature: 0 ~ 40 Degree C (32 ~ 104 Degree F)• Humidity: 10 ~ 90%, non condensation• Package Content: WNL-U556M (300Mbps 802.11n Wireless Micro-Size USB adapter)• Quick Installation Guide• CD (includes driver, utility and user’s manual)