| A | B |
|---|
 | SATA drive power connector |
 | 3 pin fan connector |
 | S Video connector (4 pin mini dinn) |
 | 6 pin Firewire connector |
 | PS/2 port connector (6 pin mini dinn) |
 | Slot for video adapters only (AGP slot) |
 | Connectors for Audio ports (Audio jacks) |
 | Ports for audio jacks (Audio ports) |
 | AUX 4 pin power connector |
 | Power connector for floppy drive (Berg) |
 | Parallel port connector on the back of the printer (Centronics) |
 | Northbridge and Southbridge (Chipset) |
 | BIOS protector (CMOS Battery) |
 | Special slot for NICs and modems (CNR slot) |
 | Pin Grid Array on a CPU |
 | Socket for PGA CPU |
 | VGA connector (DB-15) |
 | Parallel port connector (DB-25) |
 | Serial port connector (DB-9) |
 | Memory banks (DIMM slots) |
 | Connector for digital video (DVI connector) |
 | Port for digital video (DVI port) |
 | Port for RJ45 (Ethernet port) |
 | Port with 400 Mbps speed (Firewire port) |
 | Data connector for floppy drive (34 pin ribbon cable) |
 | Used to cool CPU (Heatsink) |
 | PATA HDD |
 | PATA Data slots |
 | Old expansion bus slots (ISA slots) |
 | Land Grip Array CPU |
 | Joystick connector (DB-15 2 row) |
 | MIDI port |
 | Large drive power connector (Molex) |
 | ATX power connector (P1) |
 | Printer port (Parallel port) |
 | PATA Data connector (40 pin ribbon cable) |
 | PCI Express 16x |
 | PCI Express 1x |
 | Most common expansion bus (PCI slot) |
 | Mouse and Keyboard ports (PS/2 port) |
 | Ethernet port connector (RJ-45) |
 | SATA Data connector (7 pin connector) |
 | DB-9 Port (Serial port) |
 | Old RAM slots (SIMM slots) |
 | 4 pin mini dinn port (S Video) |
 | External expansion bus (USB) |
 | USB pc connector (Type A) |
 | USB device connector (Type B) |
 | Analog video port (VGA port) |
