Apple Macintosh PowerBook 145B

I have the main unit.

type Computer
country USA
year 1993
os Mac OS 7.1
cpu Motorola 68030
speed 25 MHz
ram 4 MB
disk 1.44MB floppy
hd SCSI 80MB
graphic 640×400
colors B/W
sound beeper
ports ADB, HDI-30 SCSI, printer, speaker, modem