Cavalry 3.5″ & 2.5″ 2-Bay External Hard Drive Dock for $19.99 shipped after a $20 rebate. Here is a screenshot for your reference. This is very convenient for those who work with a lot of hard drives on a regular basis. For the technically inclined, this docking station also features disk spanning (JBOD) to combine two drives to create single large total volume. This 2-bay SATA Drive Dock usually sells for about $45 or more.