I do NOT like the fact that if I download to my desktop with my net connection that I'm screwed if I want to port it over to my laptop. (dearauthor.com)
Write down how many devices you want to charge simultaneously; this is the minimum number of ports you need. (howtogeek.com)
The only way to avoid this problem is to consider a USB device infected if it is ever plugged into a USB port you don't trust and control. (lawyerist.com)