Raspberry Pi - Model B+ (Made in UK)

The Model B+’s FOUR built-in USB ports provide enough connectivity for a mouse, keyboard, or anything else that you feel the RPi needs, but if you want to add even more you can still use a USB hub. It is recommended that you use a powered hub so as not to overtax the on-board voltage regulator. Powering the Raspberry Pi is easy, just plug any USB power supply into the micro-USB port.

Dimensions: 85mm x 56mm x 17mm
Features:
Broadcom BCM2835 SoC
700 MHz ARM1176JZF-S core CPU
Broadcom VideoCore IV GPU
512 MB RAM
4 x USB2.0 Ports with up to 1.2A output
Expanded 40-pin GPIO Header
Video/Audio Out via 4-pole 3.5mm connector, HDMI, or Raw LCD (DSI)
Storage: microSD
10/100 Ethernet (RJ45)
Low-Level Peripherals:
27 x GPIO
UART
I2C bus
SPI bus with two chip selects
+3.3V
+5V
Ground
Power Requirements: 5V @ 600 mA via MicroUSB or GPIO Header
Supports Debian GNU/Linux, Fedora, Arch Linux, RISC OS and More!