I'm testing this USB 3.0 bus-powered hard drive: http://www.amazon.com/gp/product/B0041OSQ9S
and I get: # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 8006 MB in 2.00 seconds = 4004.33 MB/sec Timing buffered disk reads: 252 MB in 3.01 seconds = 83.63 MB/sec # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 8230 MB in 2.00 seconds = 4116.54 MB/sec Timing buffered disk reads: 252 MB in 3.02 seconds = 83.55 MB/sec # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 8446 MB in 2.00 seconds = 4224.36 MB/sec Timing buffered disk reads: 230 MB in 3.02 seconds = 76.28 MB/sec Wikipedia says USB 3.0 has transmission speeds of up to 5 Gbit/s. Doesn't MB/sec denote mega*bytes* per second? - Grant
