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 Fastest Memory Cards Money Can Buy. Read More. The 64GB Extreme Pro CompactFlash Memory Card from SanDisk features enhanced data read speeds of up to 160MB/s along with data write speeds up to 150MB/s. This Extreme Pro CompactFlash Card is designed to support both full HD and 4K video as it is VPG-65 certified.