Capacitors are the most important component for electronic products power supply. The quality of the capacitors can impact the stability of the entire system & risk of product failure. Currently there are two types of capacitors, electrolytic capacitors & solid capacitors. Compared to electrolytic capacitors, solid capacitors have a longer lifespan, & provide a more stable power under high temperatures. USB (Universal Serial Bus) safeguard can prevent mainboards & USB (Universal Serial Bus) devices from being damaged by short-circuit & ESD (Electro-Static Discharge) with Anti-ESD chips built-into the mainboards. in addition, the safeguard can protect against such dangers multiple times, & greatly improves product lifespan.