ISO 3166-2 geocode for Argentina. This is used as an international standard for shipping to Argentina. Each Argentinian province has its own code with the prefix AR.. For example, the code for the Province of Buenos Aires is ISO 3166-2:AR-B.
The USB 2.0 interface can be a limit due to signalling and command overhead as well as spacing between packets. I have a fast SSD connected by USB 2.0. The drive is much faster than the interface (by more a factor of 10). Read Speed maxes out around 33 MB/s and Write Speed at 17.5 MB/s. Write Speeds are almost 50% slower due to a verify-read after the write and the fact that the USB signal is half-duplex as another answer mentions.
The average wpm speed is only 41.4 words in one minute. This is far below the speeds of the record holders, or even the speeds that are needed to be successful in the working world. However, it is considered a good typing speed. The average typing speed for boys is 44 words per minute. This is slightly faster than for girls, who clock in at 37 wpm, a full 7 word per minute slower. This seems a little odd, because statistics show that girls actually enjoy practicing their typing skills more than boys do.