At its suggested retail price of $25, we'd find it hard to understand why Kensington's Absolute Power 2.1 with PowerWhiz exists -- it's merely a straightforward, boxy 2.1-Amp power adapter with folding blades, shipped without a USB cable or any other accessories. For just four dollars more, one can pick up Apple's 10W USB Power Adapter with an six foot extension cable and a Dock Connector to USB Cable. However, Kensington's accessory street prices…
