Mick Gill's Blog: Connect External Storage To The Nexus 7

Like most Companies Google would like to squeeze every last 'Cent' from you when purchasing their Products.

Anyone who purchased a Nexus 7 will instantly realize that on the 8GB their is no MicroSD Card Slot. So if you want more storage then you will need to purchase a higher capacity Nexus 7 such as the 16GB.
Never fear though as their is a cheaper storage solution as the Nexus 7 uses USB OTG technology. USB OTG lets you connect other USB Storage devices to it. You will however need to install File Management Software on the Nexus. Some good Android solutions are ES File Explorer or others.