Picablu 0 Posted July 5, 2010 Not sure if my question really belongs in this forum. Would like to know if using an LED light that plugs in to a USB port is a 'drain' on my laptop causing it to 'wear out' sooner than normal. The light uses two 4.5V 0.12A bulbs. It would be especially helpful to receive an answer today, as I can get the best price for this item today should I decide to purchase it. Thank you in advance for your advice. Quote Share this post Link to post Share on other sites
larry39 0 Posted July 5, 2010 I cannot advise you on whether to buy or not buy a product, but maybe a way to get more information. Typically, on a desktop, you can draw 500ma per port. Since you have a laptop, the spec on your system may be different. If you are running XP (not sure about other OS?s), go to device manager, expand the USB controllers and right click on a USB root hub. Select Properties and then click the power tab. It will tell you the power available and what current that port us pulling. Quote Share this post Link to post Share on other sites
Picablu 0 Posted July 5, 2010 Thank you Larry. Quote Share this post Link to post Share on other sites
Talldog9 0 Posted July 5, 2010 .240 amps is low.It should be fine. Quote Share this post Link to post Share on other sites
Picablu 0 Posted July 5, 2010 Thank you Talldog. Quote Share this post Link to post Share on other sites
