This is for those trying to access WiFi from long distances and designed to be mounted on the roof of your dwelling. You are better off having a smaller SMA connector than a large one as it loses a significant amount of power as distance is increased. Therefore, you are better off having a long active USB cable to compensate. You will also need to make your setup weatherproof. This is a serious kit for serious people and likely to be illegal in some countries. We recommend that you use BackTrack 5R2, latest compat-wireless drivers, increase TX power beyond your regulatory domain and install it onto a hard drive or virtual machine (VM) environment. I will add other sources and suppliers when I have a chance. Adapter: Alfa AWUS036NHR (RTL8188RU) 2000mW b/g/n - Buy from Amazon Antenna: TP-Link NT TL-ANT2424B 2.4G 24dBi - Buy from Amazon Connector: TRENDnet Low Loss Reverse SMA Female to N-Type Male (2M) - Buy from Amazon USB Cable: Tripp Lite USB2.0 16-Feet Certified Active Extension Cable - Buy from Amazon $115 USD(currency converter left side, bottom bar)Buy Kit Price is an estimation only and does not take into account postage. You can find out more (e.g. price, specs, reviews) by clicking the 'Buy from Amazon' links to buy individually or view the entire kit by clicking 'Buy Kit'