The key specifications for the tp-link tl-wn725n 150mbps wireless nano usb adapter:
wireless speed: up to 150mbps
interface: usb 2.0
wireless standards: ieee 802.11b, ieee 802.11g, ieee 802.11n
frequency: 2.4-2.4835ghz
security: supports 64/128 wep, wpa/wpa2, wpa-psk/wpa2-psk (tkip/aes), ieee 802.1x
antenna type: internal
dimensions: 18.6 x 15 x 7.1 mm (0.73 x 0.59 x 0.28 in)
weight: 2.1 grams (0.07 ounces)
operating system compatibility: windows (8.1/8/7/xp/vista), mac os x (10.7~10.10), linux
operating temperature: 0°c~40°c (32°f~104°f)
storage temperature: -40°c~70°c (-40°f~158°f)
operating humidity: 10%~90% non-condensing
storage humidity: 5%~90% non-condensing
this adapter is designed to be very compact and convenient, making it easy to leave plugged into your laptop or desktop without it getting in the way.