I use my laptop during all times of the day and night and I noticed that I was having a hard time reading the keys on my laptop keyboard when there was low light such as at nigh time. I did a search online and found out that there are usb lights that you plug right into your laptop and it will illuminate your keyboard. I purchased one from Amazon.com for only $5.49 and it works great. I just plug the light into the usb port on my laptop at night and it lights the entire keyboard. I have no problem typing with this usb light and I would highly recommend to anyone who uses their laptop during he night.