Introducing the MB994IKO-B, a rugged full metal dual bay 2.5" SATA/SAS hard drive / SSD mobile rack backplane designed with a Slim Optical Disk Drive (ODD) slot for use in a single external 5.25" bay. It is a device designed with a rugged full metal build commercially designed for: Medical & Military systems, Media servers, IPCs, HTPC, and All-In-One computers, approved & used by Tier 1 companies. Dual 4-pin power connectors are used to ensure secured and consistent power supply to both drives and ODD, whether they are low power consumption 2.5" SATA SSD''s or power hungry 15000 RPM 2.5" SAS drives. The trays feature an individual metal locking mechanism for each tray, ensuring drives are not accidently ejected or tampered with. Also included is a single 40mm cooling fan with on & off switch to assist the drives running at their optimal temperatures, in even the most intense applications. Versatility is the Key The MB994IKO-3SB separates itself from the rest of the MB994 series by the unique Slim Optical Disk Drive slot that is available. The Slim ODD slot uses our EZ-ODD Tray made of rugged full metal, and is easily removable by use of the provided key or via a side latch. This allows system integrators more freedom to better meet their potential client''s needs. The EZ-ODD Tray is compatible with any standard Slim Optical Disk Drive with 12.7mm height. The MB994IKO-3SB utilizes our EZ Slide Mini Trays, making drive interchangeability and maintenance completely hassle free. The trays are built using rugged full metal so that they are durable for many lifetimes, while will not weigh you down when transporting your data from system to system. Also featuring a full cage design, the added top drive cover provides added layer of protection while moving the drive. The 2.5" HDD trays are designed to accommodate 5mm, 7mm, 9.5mm, 12.5mm & 15mm 2.5" SAS/ SATA SSD/HDD drives, giving you excellent control of your 2.5" hot swap backplane. Fan control further allows the potential system to be accommodated properly depending on the hard drives used. If a SSD is used, fan can be left off and shut off the noise completely from the MB994IKO-3SB. Otherwise, the fan is a great asset to assist in cooling mission critical hard drives. Excellent Build Quality The MB994IKO-3SB body is built with aluminum to be able to hold up in the toughest of conditions, provide excellent heat dissipation, and shave as much weight as possible. Included ventilation slots on the front and back for maximum airflow to keep your drives running cool, and an LED is placed on the front of each drive tray to give the user drive status at all times. With the Rugged Full Metal design, the ToughArmor is perfect for industrial and medical devices that may require a flammability rating as the full metal material is considered to already compliant with flammability requirements. Built for Security The ToughArmor MB994IKO-B tray systems uses an individual key lock mechanism for each tray, locking it in place and protecting against accidental ejection or malicious activity. This is useful in high-security zones where additional physical security is required, or in on-the-go environments such as in-vehicle PCs and mobile workstations. In the Smallest Package Possible Utilizing its small form factor, the MB994IKO-3SB is perfect for use in gaming PCs, HTPC, small form factor cases with limited external 5.25" expansion bays, or a Slim ODD and hard drives are needed. SMB''s, SI and power users all benefit from the most features, in the smallest form factor possible.