*Breadboard power supply module,   
 *Compatible with 5 V, 3.3 V   
 *Apply to MB102 breadboard   
 *Input voltage: 6.5-12 V (DC) or USB power   
   supply   
 *Output voltage: 3.3V/5V can switch over   
 *Maximum output current: <700 ma   
 *Fluctuation two road independent control,     
 *can switch over to 0 V, 3.3 V, 5 V