I have been using this dongle since many years. it has given good service till date. Isp support of this dongle is very good. it support all the sims of different operators.
The only thing is it do not support micro or mini sim. only full sim is fittedinto the dongle. It provide the full speed of internet available. 3G speed of this is also amazing. Sometimes it takes too long to start working which sometimes is irritating and one more major issue with this is that sometimes the devices is not detected by the system or laptop. After repeatedly trying it detects which is also very infuriating.
Overall a good product to use .