are the Retina MacBook Pro USB speeds supposed to be different?

[Advil]

Noticed while charging two iPhones that the port on the right side of my MBP was charging at 2100 mA and the one on the left was at 1000 mA.

Is this normal/expected? Does this affect transfer speed or only charging speed?

http://i.imgur.com/IhzRcUk.jpg

http://i.imgur.com/SUtzO8Y.jpg

 

[brand]

Noticed while charging two iPhones that the port on the right side of my MBP was charging at 2100 mA and the one on the left was at 1000 mA.

Is this normal/expected? Does this affect transfer speed or only charging speed?

mA is not a measurement of USB speed or data transfer speed.

 

[JackieInCo]

I remember with the first few MacBook Pros that I owned, it was always recommended to use a certain port for portable drives because one generally supplied more power than the other.

 

[Significant1]

Thas is normal/expected. Only the first device requesting extra power, will get it, the rest will continue with normal power. Read all the details in Apple's documentation about usb power here:
https://support.apple.com/en-us/HT204377

 

[BoneDaddy]

I also have a question concerning USB 3.0

I have a mid 2014 13" rMBP. Why, when I look in "about this mac", does it say they are both 500mah? I thought that was USB 2.0?

 

[BoneDaddy]

^Won't let me edit my post. I meant mA.