I would like to use it to read SD cards and Micro SD cards
This Android compatible micro USB reader might work - but doesn't specifically mention the Nexus 4.
http://www.kickstarter.com/projects/andyfei/mini-microsd-reader-for-android-smartphones-and-ta
Sorry - just saw comment mentioning it won't work on Nexus4
This Android compatible micro USB reader might work - but doesn't specifically mention the Nexus 4.
http://www.kickstarter.com/projects/andyfei/mini-microsd-reader-for-android-smartphones-and-ta
The Nexus 7 does not have expandable memory. I suggest you purchase the 32 GB variation for bigger storage.