Had been fine for months. All modern DVD-players, hard disk drives and SSD’s are powered by SATA power. The SATA cable is primarily used to connect internal hard drives… Where does it go? The power cable replaces the old 4 pin peripheral cable and adds support for 3.3 volts (if fully implemented). Completely obsolete, but some PSU’s still come with a mini-molex connector. Connect the insulated power cable with the wider tip into the larger connection port situated on the left-rear of the HDD. The 68-pin flat ribbon connector is unique in that the connectors on the cable are male, and the interfaces on SCSI drives and host controllers are female. SATA power cable. 2. If the power cable does not fit easily, check to make sure that it is not upside down. There are many connectors, and identifying them can be difficult, especially for a novice. Connect the data cable to the smaller SATA port on the hard drive. They connect the peripheral directly to the power source. This is one of those questions that make people (well, me particularly) go huh? 5 SATA Cable for Mid-range servers. PC power supply cables contain vital connectors for your computer. SATA was introduced to upgrade the ATA interface (also called IDE) to a more advanced design. Then, use an available SATA power cable coming from your system’s power supply and connect the cable to your Crucial SSD. These cables stuck out from the SMPS of the CPU and hooked on to the connector in the SSD. However, the internal flat ribbon version does not use any thumbscrews or latch clips to hold the connector in place; it is held in solely by the friction of the connector and pins. See Figure 2. Attach the other end of the SATA cable to your Crucial SSD. Since the release of SATA 6GB/s, there has been some confusion regarding the necessity of using a specific SATA 6Gb/s cable for SATA 6Gb/s drives. SATA drives are allowed to be connected to data without power, and to power without data. The 68-pin socket internal connection is the same size and shape as the external MD68 pin interface used for SCSI devices and cables. Today Linus walks you through the evolution of the SATA standard and the advantages that exist from upgrading from SATA1 to SATA2 or SATA3. Newegg.com offers the best prices on computer products, laptop computers, LED LCD TVs, digital cameras, electronics, unlocked phones, office supplies, and more with fast shipping and top-rated customer service. Note: Most computers have an available SATA power cable. Connect the data cable to the smaller SATA port on the hard drive. A SATA cable with a power connector provides power supply to the SSD device.

SATA power cable. However, while a PATA data cable can have two devices attached to it at once, a SATA cable allows just one. SATA was introduced to upgrade the ATA interface (also called IDE) to a more advanced design. They are designed so when data is connected without power, some limited drive information can still be obtained (this is mostly used in RAID and backup setups where you want to keep some disks offline to reduce wear and tear, but still need to know what's installed).
Put the original DVD drive back in there, same thing.

So I have a Crucial Mx100 SSD and I think it's powered by a 15 pin SATA Power Extension Cable (not sure but it has 4 pins in a plastic case). Here is a quick guide that will help you to identify the different types of connectors of your PC's power supply. Another type of cable includes a female port at one end and an AC plug at the other. Connect the SATA cables to the hard drive.

2.2 SATA Cable for HDD The power cable replaces the old 4 pin peripheral cable and adds support for 3.3 volts (if fully implemented). However, the internal flat ribbon version does not use any thumbscrews or latch clips to hold the connector in place; it is held in solely by the friction of the connector and pins.

SATA SATA (Serial Advanced Technology Attachment, or Serial ATA) is the standard interface used in modern IBM compatible computers for data access. Connect the insulated power cable with the wider tip into the larger connection port situated on the left-rear of the HDD.
A SATA cable is used for connecting the SSD installed as an internal device in the computer. Newegg shopping upgraded ™ You will need to buy a SATA date cable, there should be a spare SATA power connector attached to the wiring harness, inside the case for an additional hard drive. Connect any USB headers from your accessories such as the GRID+ or Aperture M Card Reader.