imageDesktopreview.com has reviewed Dell Studio Hybrid, the tiny desktop which built by notebook's part as expected. With the spec:-

CPU: Pentium Dual-core up to Core 2 Duo
Memory: 1-4GB (SODIMM)
Hard drive: upto 320GB (in fact, you could grab 2.5" 500GB HDD putting yourself)
Optical drive: CD/DVD burner and Blu-ray as an optional
Wireless: 802.11n (optional with PCIe)
Ports: 5*USB, 1*HDMI, 1*DVI, 1*Gigabit LAN, 1*IEEE1394 4pin [no VGA port, sorry =)]

Also, you can grab the extra colorful cover for just $17 each. This is starting at $499 [$399 usually if promotion is concerned] I think it's pretty nice. With a notebook standard, this little box is also sucking the juice less than regular desktop. Moreover, all parts is easily accessible and upgradable.

dell studio hybrid dell studio hybrid

Check out more detail @ desktopreview.com