D-Link DNS-343 4-Bay Network-Attached Storage Enclosure for $249.99 shipped after promo code DLINK522.  Here is a screenshot for your reference.  Alternatively, it is available at Amazon for $249.99 shipped.  This NAS enclosure can accommodate up to 4 SATA hard drives and features an OLED display, Gigabit Ethernet, and 0, 1, 5 and JBOD RAID configurations.  Most places have it for about $384.