, Award-winning innovative SCA (Single Connect Attach) direct connect drive carrier - provides better cooling and reliability, Ultra3 (LVD) support - Delivering data transfer rates up to 160 MB/s per channel, Provides storage capacity of up to 2 TB per enclosure (using 146 GB disk drives), Modular design allows the Enclosure 4300 to be used in any storage configuration from JBOD to Smart Array storage enclosures to external RAID arrays, Hot pluggable disk drives, power supplies, and fans, Redundant fans and dual bus I/O module, , Environmental Monitoring Unit (EMU) Monitors environmental conditions within the enclosure,