No, the Samsung 840 Pro is a SATA drive, so you connect it to a SATA port, not a slot on your motherboard.
You need a SATA data cable. One end of the cable connects to your drive and the other end connects to the SATA port on your motherboard.
You also need a SATA power connector. If you have a newer power supply then one end should come from your power supply and the other end connects to your drive.