Replacing A Square Recessed Lighting

external connectors
1. Mouse and keyboard connector (PS / 2)
2. Serial port (may or may not have one)
3. Monitor connector (D-SUB 15 pin)
4.
parallel port 5. USB Ports
6. Ethernet connector (RJ-45)
7. Audio connectors











1.
processor slot 2.
IDE connectors 3.
4 memory slots. Connector for flexible storage units
5. Power supply connector
6. PCI Slots
7. AGP Slot
8. Chipset

9. Graphics processor (may or may not have one)
10. Serial ATA or SATA connector (may or may not any)
11. PCI Express Slot (may or may not have one)
12. CMOS battery