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! Maximize Space Efficiency The FLEX-FIT Quinto MB344SPO is designed to unleash the full potential of the external 5.25" ODD drive bay. By combining a slim/ultra-slim optical drive bay and 4x 2.5" data drives into a single 5.25" bay, that allows more advanced usage for small-form-factor and HTPC style systems, without compromising on storage or expandability. Multifunctional Detachable ODD Faceplate The MB344SPO comes with a multifunctional detachable ODD bay faceplate for the ODD slot. Multifunctional ODD bay faceplate can be used to prevent dust from getting into your system when a slim or ultra slim ODD is not installed. The faceplate can be easily hidden and stored inside of bracket with a specially designed parking spot for the faceplate. To install a slim ODD (12.7mm height), simply insert your slim ODD into the FLEX-FIT Quinto and secure the device with included screws. The Multifunctional ODD bay faceplate can also be used as an spacer when a thinner ultra slim ODD (9.5mm height) is installed. Easy Installation The MB344SPO 2.5" drive caddies use built-in screw that grip the drive, without the need for any tools. This allows for drives to be swapped quickly and easily, without having to remove any screws. When additional security is required, the optional screw holes can be used to further secure drives. Drive caddies can be removed and re-inserted into MB344SPO without tools, thanks to the single-latch mechanism. To remove the drive caddy, simply depress the latch to pull out the drive caddy. This process can be done with just two fingers. Installation is even faster, simply insert the tray into the bracket and it snaps in place. Built for Security and Protection The MB344SPO uses a rugged full-metal outer casing, to protect against bumps and ensure the enclosure lasts through many insertion / removal cycles. The open frame metal housing aids in heat dissipation and maximizes airflow, keeping drives running cool. To further improve cooling, ventilation holes are located on the front and sides of the bracket to create proper air dynamics. Anti-vibration rubber stoppers are placed inside the bracket, which grips the drives and protects the drives from vibration damage. Mechanical hard drives cause a lot of vibration, which can cause excessive noise and potentially lead to data corruption. The vibration dampeners found in MB344SPO absorbs the vibration and prevents this detrimental energy from reaching back to the hard drive.