Technical specifications Physical specifications for Synology RKS1314 Mount post width must be equal to or greater than 451mm Panel width must be equal to or greater than 480mm Cabinet depth: 680mm~910mm Rack mounting holes must be square and at least 9.5mm x 9.5mm Physical specifications for Synology RKM114 Mount post width must be equal to or greater than 451mm Panel width must be equal to or greater than 480mm Cabinet depth: 570mm~720 mm (for 13-series and earlier 1U models) Cabinet depth: 570mm~810mm (for 14-series and future 1U models) model : Synology RKS1314 1U - 2U Rack Kit Slide Rail tag : HDD - SSD Accessories