/usr/sbin/prtconf
Following is an example of the information displayed:
SYSTEM CONFIGURATION:Memory Size: 32 Megabytes System Peripherals:
Floppy Drive 1 - 1.44 MB 3.5 Tape Drive 1 - WANGTEK - 5150ES SCSI FA23 Disk Drive 1 - SEAGATE - ST3610N - 510 MB 80387 Math Processor