It's USB 2.0, so it's either limited to 100 mA (low power) or 500 mA (high power), with the former being most likely due to being an internal connection.
↑ It's because of that @ ; if you preview your post with it, it'll drop the spacing, but as soon as you remove it, the preview will display correctly.
You're better off quoting others if formatting is important you.