GizMac announced the immediate availability of a 4U version of the XRackPro2 on Tuesday. The smaller version of the XRackPro2 is a noise resuction enclosure designed for users that are looking for a server cabinet that holds only a couple of devices, like an Xserve and Xserve RAID. It is short enough to fit under some desks, and is also available with optional caster wheels so that it can be moved more easily. The 4U XRackPro2 is available at the GizMac Web site, and is priced at US$499.99.