If you are looking for a multi-functional shield that can turn your Raspberry Pi 2 (RPI2) into a Solid State Drive (SSD), wireless access point (WAP) and Real Time Clock (RTC), as well as increase the USB power of your Raspberry Pi 2, check out the CSB502SSD shield by Pi 2 Design!

The CSB502SSD Shield plugs into the Raspberry PI 2 GPIO connector and converts the Raspberry PI 2 USB Host Port into a 1TB mSATA SSD Drive and Wireless Access Point thanks to Soft-AP support (the shield literary transforms the Raspberry PI 2's 802.11b/g/n WiFi module into a WiFi access point for your WiFi devices to connect to the Internet).

The shield also increases the 1.2A USB stock power of the Raspberry Pi 2 to 1.5A at 5V (dual USB 2.0 mounted on the board). The power to the Raspberry Pi 2 is fed through the shield so there is no need for an additional power source attached to the Pi 2 (the power supply is wide input 5V @ 10A, which powers all peripherals as well as the Raspberry PI 2).
The Dallas/Maxim DS1339 Real Time Clock is software compatible and the battery has a removal backup feature that maintains time keeping even if network connection drops out or is lost completely. The CSB502SSD shield also features a temperature sensor that monitors the health of the Solid State Drive; hence no need for additional hard disk monitoring software.

The CSB502SSD shield interacts with the Raspberry PI via a 40-Pin GPIO connector as well
as one USB host port; hence the shield will work with any Raspberry PI that has the 40-pin GPIO connector such as the Raspberry Pi B+ and Raspberry Pi  A+.