For computer cases that has limited 5.25” drive bay available, ICY DOCK FLEX-FIT Quinto MB344SPO creates flexibility for users who wish to install ODD and multiple 2.5” drives within an optical disk drive bay of their computer case. The FLEX-FIT MB344SPO mounting bracket supports up to 4x 2.5” HDDs or SSDs and a slim or ultra slim optical drive in a single external 5.25” ODD drive bay (DVD bay). For drive installation, the FLEX-FIT MB344SPO 2.5” drive caddies are equipped with unique built-in screws, which offer tool-less drive installation, and provide the ability for swapping the drives without removing the entire MB344SPO bracket. Also, the open frame full-metal chassis with sturdy ABS plastic caddies keeps your drives safe and cool. With an additional bonus,  it comes with a well finished metal front faceplate that blends in to most system for a clean look. For ODD accommodation, the slim optical disk drive (ODD) bay can fit either a slim (12.7mm) or ultra-slim (9.5mm) optical drive, or any device in Slim / Ultra-Slim ODD form-factor. It is a simple device but can be create a lot of convenience for those who are in need!