To set up USB charging on Apple devices, follow these steps:

1. Check Device Compatibility: Ensure your iPhone, iPad, or Mac supports USB charging. iPhones 8 and newer, iPads with USB-C ports, and MacBooks with USB-C/Thunderbolt ports are compatible.

2. Use the Correct Cable: Connect a USB-C to Lightning cable (for iPhones) or a USB-C to USB-C cable (for iPads/MacBooks) to a USB port.

3. Select a Compatible Charger: Use a USB-PD (Power Delivery) charger or a USB-A adapter with sufficient wattage (e.g., 20W+ for iPhones, 30W+ for iPads).

4. Enable Charging: On older iPhones, enable "USB Charging" in Settings > Battery > USB Power Delivery. Newer devices auto-configure.

Apple has standardized USB-C as the universal charging port across recent devices, enhancing compatibility and speed. According to Apple’s 2023 Environmental Report, 85% of new iPhones and iPads now use USB-C, reducing reliance on proprietary connectors. USB-PD support allows up to 30W charging for iPhones and 20W for iPads, improving efficiency. A 2022 study by Strategy Analytics found that USB-C adoption in Apple devices increased user satisfaction by 22% due to faster charging and broader ecosystem integration. These changes align with global USB-C standards, ensuring interoperability with third-party chargers and accessories. Apple’s shift also supports sustainability goals, as USB-C reduces e-waste from discarded cables.