This bay adapter converts half of large bay to 2 half small bays. If 2 units of adapter are used, they convert the large bay to 2 small bays. Please view illustrations below for more details.		BAY ADAPTER SPECIFICATIONS PRODUCT NAME Bay Adapter PRODUCT CODE CPX089 MATERIAL ABS Plastic COLOR Available in Ivory, Black and Gray FUNCTIONS The bay adapter is slotted into the large bay, and converts half of the large bay to 2 half small bays. If 2 adapters are used, the large bay can be converted to 2 small bays. Please view more details below..... Diagram 1: The FRONTX Casing consists of 3 small bays and 1 large bay. Diagram 2: Installing 1 unit of bay adapter into the large bay, it converts half of the large bay to 2 half small bays. Diagram 3: Installing 2 units of bay adapter into the large bay, they convert the large bay to 2 small bays.