Rear view -- the expansion slot dust covers are missing.
The ports from left to right - SCSI (25 pin), AAUI (ethernet), high density
video (special Apple monitor port that supplied power and sound to special
monitors - rarely used), 2 geoport serial ports, ADB port, sound out,
sound (mic) in.
The PDS video slot is filled with the HPV card that has 1 meg vram and
a Mac video port.