DE275 Carrier Only, SAS/SATA 3Gb/s, Steel, Black The DE275 is designed to provide durable and reliable mounting for one (1) 3.5" low profile Serial ATA (SATA) 3Gb/s or Serial Attached SCSI (SAS) drive, within a standard or undersized 5.25" half-height peripheral expansion slot. Dual lock-down thumbscrews help stabilize and secure the removable drive carrier in high shock and vibration environments.