I thought plugging it in would "just work". It didn't.
There's a few things you need to do in order to get this functionality up and running.
- Root your Nexus 7 tablet
- Download the Stickmount app
- Grant it super-user access
- Now your device can access USB storage
- Try browsing it using your favourite app. If you can't access photos or videos on the external device, try out QuickPic. The images should come up when it's done scanning.
In other news, Apple stuff "just works"