Here's a better shot of the HP LX195 MediaSmart Windows Home Server. It looks like it has 0 expandable bays (the bigger ones have SATA trays), and only comes with four USB ports.
Our guess is that the upside is the unit is going to be very cheap (but somewhat underpowered in terms of hardware). There's Gigabit Ethernet on this thing at the very least, but the LX195 is definitely aimed at people with less than an obscene amount of storage, but still have the need for a Windows Home Server. [Gizmologia via Engadget via Crunchgear]