Apple Macintosh portable m5120

I have the main unit.

type computer
country USA
year 1989
os Mac OS 6.04
cpu Motorola 68HC000
speed 16 MHz
ram 1MB
graphic 640 x 400 10″ B&W
active matrix LCD
colors mono
sound yes
ports Apple desktop ADB bus, two serial ports, SCSI, floppy, video