This B&H Kit consists of a Sony Portable Wireless Server as well as a 16GB SD card and a 32GB SDHC card. The kit provides you with 48GB of portable external server storage that you can wirelessly access from your iOS or Android mobile phones or tablets. The device also accepts USB flash drives and allows you to manage your data using the downloadable Personal Wireless Server Manager application from the Google Play or Apple App store. With the server you can wirelessly backup, access, and share your data with up to eight different users. The server can also be used to recharge the battery of your phone or tablet.