Charge It on Your AirEx

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Savvy road warriors know you can find USB-charging cables for many portable devices--iPods, iPhones, Bluetooth headsets, game systems, you name it--and then charge those devices by connecting them to your laptop's USB ports or to a "universal" USB charger. (Some vendors even make portable surge protectors with built-in USB-charging ports; I've covered such devices from Belkin and Kensington.) But many laptops don't supply power to their USB ports if the computer isn't on and awake, and a USB charger is just one more thing to carry.

If you regularly bring Apple's AirPort Express Base Station on your travels--say, to create a wireless network in your hotel room--this tip on Mac OS X Hints suggests a clever dual use for the Express: use the Base Station's USB port, officially designed for sharing a USB printer across your network, as a USB-charging port. Just plug the USB cable for your iPhone, iPod, or other device into the Express while you work (or sleep), and the gadget will be ready to go the next morning.

I have to admit, rather sheepishly, that it never occurred to me to try this, even though, in retrospect, it seems fairly obvious. And although several commenters to the original Hints article seem to have experienced incompatibilities, I tested both 802.11n and 802.11g AirPort Express units with a variety of iPhones and iPods, and each combination correctly charged. (Just to be sure, test out your own Express with your portable devices before leaving your chargers at home.)

This story, "Charge It on Your AirEx" was originally published by Macworld.

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