Zalman has rolled out twin Dual-drive docking stations known as the ZM-MH200 U3 and ZM-MH200-HUB. These twin brothers has the difference in the ports, where ZM-MH200 U3 has USB 3.0 connectivity, while ZM-MH200 HUB has eSATA, USB 2.0 ports and the top side has a hub for 2 USB 2.0 devices, along with SD/SDHC and microSD card reader. Both can dock two hard drive at a time, and it can handle both 2.5-inch and 3.5-inch SATA drives simultaneously.
It appears two of them has their own benefits, but ZM-MH200 U3 version is practically higher in pricing. You can get the Zalman dual drive docking station for €62.90 (ZM-MH200 U3) and €58.90 (ZM-MH200 HUB).