Gee....things is so complicated now.Why? I have my Belkin 4 USB port adapter into one laptop USB....my wireless mouse into another and my hardwired keyboard into the third. All work fine. My cell phone came with a house charger...and I bought a 12V charger for the car/motorhome. My Tablet has it's own house charger...2.0, 3.0 (for speed?) USB ports and colors? Don't know. Everything works fine. Of course I use this laptop strictly for pleasure...not business.
Maybe I compartmentalize too much...........