I works fine, but the hardware's a pile of trash,
This review is from: Icybox External 4-Bay RAID Enclosure for 4 x 3.5 inch SATA l/ll/lll HDDs (Accessory)
It works fine, nice speed, supports huge drives & does everything a RAID enclosure should do, & it's cheap.
However, after using it for around 2/3 of a year, the transformer on the power cable decided it would break, completely randomly. No idea why.
I guess you get what you pay for, but if you want data security, then this isn't for you. If you want an expansion to your current storage on the cheap, then I'd recommend this. They do have a customer support system, who I have contacted, but have yet to receive a reply. Anyway, it works well, aside from the fact that the price is reflected in the hardware.