General Information The HSB4SATSASBA Removable 4-drive Backplane makes inserting and removing drives fast and easy, by turning three 5.25″ bays into a hot-swappable interface for up to four 3.5″ SATA or SAS hard drives (HDD). For added versatility, the hot swap bay can interface with SATA I/II/III and SAS I/II hard drives — an ideal solution for enterprise system applications. For a quick and secure method of installing and removing drives, the backplane features ejection levers and a key-lock design. To help prevent drive failure, the bay provides drive cooling with a built-in fan and excellent heat dissipation with a vented aluminum enclosure. The HSB4SATSASBA is backed by a StarTech.com 2-year warranty and free lifetime technical support. Technical Information Number of Hard Drives Supported: 4 Number of Hard Drives Installed: No I/O Expansions Number of Total Expansion Bays: 4 Number of 3.5″ Bays: 4 Network & Communication Wireless LAN: No Interfaces/Ports Drive Interface: 6Gb/s SAS Drive Interface: Serial ATA/600 Host Interface: 6Gb/s SAS Host Interface: Serial ATA/600 Physical Characteristics Material: Aluminum Cooling Fan: Yes Form Factor: Internal Compatible Drive Bay Width: 5.25″ Height: 5″ Width: 5.7″ Depth: 7.8″ Weight (Approximate): 2.80 lb Miscellaneous Package Contents: 4 Drive Trayless 3.5in SATA/SAS Mobile Rack 8 x Installation Screws 2 x Drive bay Keys 4 x SATA Cables 1 x Instruction Manual Certifications & Standards: FCC CE Environmentally Friendly: Yes Environmental Certification: RoHS Environmental Certification: WEEE Environmental Certification: REACH Warranty Limited Warranty: 2 Year Product images may differ from actual product appearance.