The Storage Enclosure 335SAS is an internal hot-swappable disk drive enclosure for up to four Serial Attached SCSI (SAS) or Serial ATA (SATA), or Serial ATA II (SATA II) hard disk drives. It occupies three half-height 5.25” slots in a server or workstation chassis and supports low profile 3.5” hard disk drives. Available in both beige and black, the Adaptec 335SAS supports drive data transfer rates up to 3Gb/s while still supporting legacy 1.5Gb/s SATA drives.