Everything in your computer requires power. The power supply has leads running to the motherboard to support CPUs, PCI slots and their respective devices, USB ports and optical drives. #2 --- A power...
If it's an IDE drive, it will use a 4-pin peripheral power connector, often called a "Molex" power connector, Molex being a major manufacturer of these types of power connectors. If the drive is a...
because the termination and relays in side the telecoms penal needs for DC supply to continues the protection equipment and relay and purpose of telecoms