Drive Toshiba Corporation KXG50ZNV256G 256GB hdparm -t /dev/nvme0n1 Timing buffered disk reads: 5642 MB in 3.00 seconds = 1880.28 MB/sec Drive Realtek Semiconductor Corp. multicard reader hdparm -t /dev/sda Timing buffered disk reads: Drive Micron MTFDDAK256MAM-1K12 256GB SSD hdparm -t /dev/sdb Timing buffered disk reads: 1500 MB in 3.00 seconds = 499.86 MB/sec Drive Realtek Semiconductor Corp. multicard reader hdparm -t /dev/sdc Timing buffered disk reads: Drive Realtek Semiconductor Corp. multicard reader hdparm -t /dev/sdd Timing buffered disk reads: 254 MB in 3.02 seconds = 84.10 MB/sec Drive Realtek Semiconductor Corp. multicard reader hdparm -t /dev/sde Timing buffered disk reads: