How Many Watts a Gaming PC Needs: CPU & GPU Power Supply Calculator
A gaming PC’s power supply is sized by two numbers: the CPU’s boost draw and the GPU’s board power, plus a…
What a GaN Charger Is: GaN vs Silicon Explained (2026)
A GaN charger is a power adapter built on gallium nitride transistors instead of silicon — the reason 65W now fits…
How GaN Generations Changed: GaN3 vs GaN5 vs GaN2 for OEMs
GaN2, GaN3 and GaN5 are shorthand for generations of gallium nitride power devices, and the differences are real but smaller than…
AC Adapter Types and How to Read Them: Plugs, Symbols, DC Barrel Sizes
An AC adapter converts wall power into the low-voltage DC your device needs, and it is specified by three things: output…
How Switching Power Supplies Differ from Linear Ones
A switching power supply (SMPS) converts power by rapidly switching transistors on and off, which makes it small, light and efficient;…
What a Class 2 Power Supply Is: UL 1310 Explained for OEM Buyers
A Class 2 power supply is a low-power, limited-output supply built to UL 1310, and it is one of the most…
How USB-C Differs from Micro USB (and Why It Matters)
USB-C is the connector on every modern device, and Micro USB is the one it replaced — the two differ in…
How USB-A and USB-C Compare for Charging Speed
The connector alone does not decide charging speed — the protocol does. USB-C can charge faster because it supports USB Power…
How USB Power Delivery 3.1 Improves on 3.0 (EPR Explained)
USB Power Delivery 3.0 tops out at 100W. USB PD 3.1 raises that ceiling to 240W by adding a higher-voltage mode…
How to Choose Between 20W, 45W, 65W and 100W Chargers
The right charger wattage is decided by the device, not the price: 20W covers phones, 45W handles small tablets and some…
How Long a Laptop Takes to Charge (and How to Speed It Up)
A laptop typically takes 1.5 to 3 hours to charge from empty, depending on battery capacity, charger wattage and whether you…
How to Choose a USB OEM/ODM Power Bank Supplier in China
The best power bank supplier for your brand is the one that passes your quality and documentation checks, not the one…