Let the hive mind of Engadget get that for you.
"I finally got a new laptop with a lone USB 3.0 port. I'm now looking at getting a USB 3.0 hub with a power adapter so I can use both of my USB 3.0 hard drives at faster speeds. I've read lots of horror stories where some hubs either don't come with power adapters -- and as a consequence the portable drives don't work with them properly -- or they are designed poorly which results in USB 2.0 speeds. Or, the hard drives keep getting disconnected. Do your readers have any suggestions or experience using USB 3.0 hubs? Thanks!"
I believe they had to go to the 231-1 format because FoodHD has a completely different show lineup than the SD version. Normally, when the SD and HD versions have the same program lineup, they share the same channel number. And when a user tunes to the channel, the HD version comes up first. (Note this isn't how the H20 works yet)
So to access the HD version of Food (on the HR20), you type 231-dash-1.