A graph of the Reuters internet hook up in Havana showing change in ping latency when connected to cable, though no noticeable change in service, is seen in this screen grab taken by Reuters on January 22, 2013. An undersea fiber-optic cable that promises to bring Cuban Internet and phone communications into the 21st Century stirred to life this week, two years after it was laid between Venezuela and the Caribbean island. Up to now, Cuba has linked to the Internet through satellite hook-ups that are excruciatingly slow due to restrictions under the U.S. trade embargo. REUTERS/Staff (CUBA - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY)