AIC XE1-2ET00-21 RSC-2ET,​ 2U 12x 3.5" hot-swap bays,​ tool-less 3.5" and 2.5" HDD tray,​ 800W CRPS Platinum redundant power supply,​ 2x 15mm 2.5"HDD internal OS,​ low profile rear panel,​ rail,​ 2U12 SAS