:| Number of Total Expansion Bays: 1| Number of 5.25" Bays: No| Number of 3.5" Bays: 1| Number of 2.5" Bays: No| Number of 2.5"/3.5" Bays: No| Number of 1.8" Bays: No| Drive Interface: Serial ATA/600| Drive Interface: 6Gb/s SAS| Material: Acrylonitrile Butadiene Styrene (ABS)| Material: Steel| Form Factor: Internal| Compatible Drive Bay Width: 5.25". .