Above: This is the inside of an IBM PC AT, with all of its ports in place.
Port 2 Above: This is a Combo card, extended memory card. It is AST made.
Port 3 Above: This Extended Graphical Array Card is a Video board, hand done.
Port 5 Above: This is an Intelligent Printer interface, XRC (centronics).
Port 6 Above: This is a Case Interface, both parallel and serial.
Port 8 Above: This is a Western Digital Disk Drive Interface Card.
This is the motherboard of the IBM PC AT.
Above: This is the hard disk drive top board (motor regulation drive).
Above: This is the hard disk drive bottom board (power for drive, connections, interface card).
Above: This is the back of port 6, the case interface, but displays buses (the connections).
Above: Floppy Disk Drive (5.25 in) 360 KKB
Above: 5.25 Floppy Disk Drive top view.
Above: 5.25 Floppy Disk Drive bottom view.