Processor ARM11 Broadcom BCM2835, Single-core 1GHz
2 micro USB ports (one for power and one for USB)
1 mini HDMI port
1 port CSI
1 micro-SD card reader
Size: 65.0mm x 31.0mm x 5.0mm
Weight: 0.09 Kgs
Warning: you will need a 2×20 GPIO header to connect most expansion cards .