The MB559TRAY-2S is a 2.5"/3.5" HDD/SSD tray for White color ICYBento (MB559) series and ICYCube (MB561) series external SATA HDD/SSD enclosures. It is interchangeable with the DataCage MB45X, MB876 series and Fatcage MB15X series internal HDD/SSD mobile rack backplane cages. Compatible ICY DOCK models. Single Bay: MB559U3S-1S, MB559UEA-1S, MB559UEB-1S, MB559US-1S Multi Bay: MB561S-4S, MB561U3S-4S, MB561US-4S-1.