And when I sat down I noticed there was a USB charger located on the seat rest. How novel and how thoughtful!
This was the first time I saw this in the Airport Express -- I took the train earlier and it didn't have this feature, and a few days earlier when I arrived back in Hong Kong the train I was on didn't have it either.
Nevertheless, it's good to know the Airport Express train is keeping relevant, and that phone charger is a godsend for many passengers who need a quick charge on the way. And why not charge the phone during the 24-minute ride?