Western Digital is whipping the sheets clear from a new, 7mm tall 2.5-inch mobile HDD that’ll sit nicely inside your Ultrabook or other skinny device. The single-platter Scorpio Blue comes in 320 and 500GB varieties and will even sit nearly in 9.5mm slots (just, you know, bring along some blu-tack to pad the void around the drive bay). The units boast of super-low power management, quiet operation (with WD’s WhisperDrive tech) and capable of taking a shock of 400Gs. It’s available from today via selected retailers, the 320GB edition costing $80 and the 500GB version $100. Just be careful not to look at it side-on, after all, it’s so thin you may not find it again.