---------------------Yyci.vn------------Decription: Feature:3.5-inch hard disk mounting screw holesHard drive cooling fan mounting screw holesHard disk rack mounting screw holes2.5-inch hard drives (SSDs) fixing screw holesRack hardness is very good, in the desktop chassis can put 5.25-inch optical drive.Converted into a 3.5-inch drive bays, 2.5-inch hard drives, SSD drive bays,12cm fan bit.when you install a fan, it will account more than a optical drive.Support 3.5-inch (or 2.5 inch or SSD) hard drive and a 12cm fan.Above Install hard disk , below install the fan. Make sure the hard disk high speed read.Effectively enhance the machine speed and extend drive life.Specifications:Support: Solid State Drives /2.5 inch hard drive, 3.5-inch hard driveAt the same time support the installation: a 12cm fanMaterial: Plastic 145 x 118 x 20mm (L x W x H) As the picture showIncluded: 1 x 5.25" to 3.5" 2.5" SSD HDD Hard Drive Tray