The MonoPrice 7634 18inch SATA Extension Cable Black gives you some extra length to your SATA cables so installing in a larger-than-average case is a painless process. You may also find it useful to route your cable outside the case to temporarily hook up a hard drive. This extension cable colored black to be as unnoticeable as possible. The tip of the female end is colored orange to help you find it when it needs to be used. This SATA cables enables you to extend a SATA interface and is made for connecting different devices with 7pin SATA port.