TX308WR Tower/4U-R 3x5.25" + 8xSAS/SATA/SCSI 760W Redundant, 17.2"Tall	TX214W Tower/Desktop 2x5.25"+3.5"+4xSwap SATA 645W P/S, 16.8"Tall	TX526 Tower-13Bay 5x5.25"+2x3.5"+6xHD up to 650W P/S, 21.8"Tall
TX506 Tower-11Bay 5x5.25"+ 6x3.5"HD up to 650W PS,23"Tall	TX615 Tower-12Bay 6x5.25"+1x3.5"+5xHD up to 650W P/S, 21.5"Tall

Model Means: T=Tower X=Extended ATX, S=Standard ATX, 308=3x5"+0x3"+8HD, W=SwapBay, R=Redundant P/S