Audio Chipset: Realtek 7.1 Surround Sound High Definition Audio CODEC*
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Specifications: Fits in Standard 5.25 inch Driver Bay and may not fit in chassis with customized Bay Please ensure the 5.25 inch Driver Bay of your computer is standard size before ordering this item. - 1x 3.5 - inch Drive and 1x 2.5 - inch Drive could Mounted to this ITEM at the Same Time. However Mounting only ONE drive is recommended for heat dissipation. What's in the Box 4 x Rubber Washer 8 x Mounting Screws included