Today we look atexternal storage devices. With modern personal computers the storage is often internal but on many early desktops, it was external to the CPU unit. I am not showing a cassette recorder as I assume many know what they look like.
From top left going clockwise, we have a Wang Laptop SCSI drive, 5.25 inch drive at 360K, DEC RRD42-DA SCSI Compact Disk Reader at 780 MB, DEC RD53 hard drive at 71 MB, HP 82902M, HP-IB interface 5.25 inch floppy drive at 270 KB, HP 82901M, HP-IB interface, dual 5.25 inch floppy drive at 270 KB each and a DEC RRD50 compact disk at 780MB. Grand total of external memory = 922 MB, not quite a GB.
Some ancient interfaces.