molex for IDE devices and sata power connector for SATA devices
the optical drive will connect to the power supply with a connector called molex connecter it is a 4 prong connector
All PATA (Parallel ATA) drives use the Molex 4-pin power connector. This connector provides the necessary power to the drive, supplying +5V and +12V to operate. The Molex connector is typically used for older hard drives and optical drives before the transition to more modern interfaces like SATA.
To connect an ATA 133 motherboard, first, ensure that the power supply is disconnected. Then, connect the motherboard to the power supply using the 24-pin main connector and the 4/8-pin CPU power connector. Next, attach the ATA 133 hard drive or optical drives using an ATA (IDE) cable, ensuring the drives are set to the correct master/slave configuration. Finally, connect any necessary peripherals and power on the system to ensure everything is functioning correctly.
There are two kinds in common use:Molex - an older standard, but still commonSATA - Serial ATA, a newer standardSee the related links for pictures.
PATA (Parallel ATA) and Molex connectors serve different purposes in a computer's architecture. PATA is used for connecting hard drives and optical drives, while Molex connectors are typically used to supply power to these drives. PATA drives can be powered using a Molex connector, but they also require a separate data cable for the PATA interface. Therefore, while they are connected in terms of functionality, they do not directly connect to each other.
a sata power connector is normally used for powering sata dvd drives as well as sata hard drives and ssd drives
The power connectors used by both 5.25-inch and 3.5-inch floppy drives are 4-pin connectors. The larger connector--used by 5.25-inch drives--is called a Molex or peripheral cable. This type of cable is also used by IDE/ATA hard drives and optical drives. The smaller 4-pin cable used by 3.5-inch floppy drives is generally called a floppy power cable.
A Molex power connector is a 4-pin power connector found in most computer power supplies. It is used to provide power to large internal drives like hard drives and CD/DVD drives. They are slowly being replaced by SATA power connectors, which are easier to install can cannot be inserted incorrectly. They should not be confused with a Berg connector which is much smaller and is used to power floppy drives. The molex connector is used for IDE drives
A 4-pin peripheral power connector, commonly known as a Molex connector, typically provides +12V and +5V power. It can deliver a maximum current of up to 11 amps on the +12V rail and 11 amps on the +5V rail, depending on the specific power supply unit (PSU) capabilities. This allows for a total power output of approximately 132 watts when considering both voltage rails. It's mainly used to power older hard drives, optical drives, and other peripherals.
A Berg connector is used for providing power to floppy drives and sometimes other peripherals.
A "Berg" connector.
SCSI Harddrive:80-pin Connector The SCA interface was designed to provide a standard connection for systems using hot swappable drives. SCA interface drives connect to a SCSI backplane that provides power, configuration settings such as SCSI ID, and termination of the SCSI bus.