Below are speed measurements using the Tata Photon WiFi Max and Tata Photon WiFi Plus USB WiFi products. Both tests below were conducted in Chennai, India around December 20th, 2015.
Overall the Photon WiFi Max is quite decent and provides a satisfactory internet experience for a person visiting from abroad. The WiFi Plus product was a just good for general browsing. Video and FTP simply do not perform well.
Tata Photon WiFi Max