Drive SAMSUNG HM121HI 120GB hdparm -t /dev/sda Timing buffered disk reads: 132 MB in 3.03 seconds = 43.54 MB/sec Drive Multi-Card 0B hdparm -t /dev/sdb Timing buffered disk reads: Drive Genesys Logic, Inc. microSD Card Reader hdparm -t /dev/sdc Timing buffered disk reads: