SANS DIGITAL TowerRAID TR4M-B - 4 Bay SATA to eSATA JBOD / RAID 0, 1, 1+0, 5 Enclosure

Form Factor : Compact Tower
HDD Trays : 4 Hot-Swappable 3.5"
Maximum Capacity : 6TB
Drive Interface : 4 x 3.5" SATA I/ SATA II
Cooling Fan : 3.15" Ball Bearing Fan
Status Indicators : Power LED and 4 x Access LED