I had my laptop apart fixing the dc jack and saw this. Anyone know what kind of connector this is? What could I use it for? The laptop is a Toshiba C55-A5285. It's a Core i3 3120M on HM76 chipset.
Any SATA-based optical drive should be able to plug directly into that connector. There are also HDD caddies that contain the adapter needed to plug a laptop HDD or SSD into that port.