I'm guessing you're looking at charging a phone faster?Thanks Infected... I contacted Lexus in CA and they told me "they are the same..." as you said... some after market unit for "cigarette lighter" has 2 USB ports and they are 2.1 amp and 1.0 amp
Thanks... I just bought a dual USB ports , but for my Rav 4, not for my CTI'm guessing you're looking at charging a phone faster?
I put a constant 12 volt accessory port in the glove box.
Maybe something that you'd want to do, or, install dual USB ports in place of the accessory port I did.