Apple Compatibility (U1 & U2):Both U1 and U2 cables are MFi certified, ensuring a perfect connection with your iPhone, iPad, and iPod. They offer fast and reliable charging, reducing the time your devices spend out of action. Ultra - fast Charging (U1, U3 & U4):U1 supports up to 3.0A fast charging, U3 offers up to 3.0A with a 20V voltage for Type - C devices, and U4 takes it to the next level with 5.0A ultra - fast charging and up to 100W power delivery. Experience significantly reduced charging times across a range of devices. High - speed Data Transmission (U4):The U4 cable provides efficient data transmission at 480M/s, making it ideal for quickly transferring large files, whether for work or personal use. Smart Chip Technology (U4):Equipped with a built - in smart chip, the U4 cable automatically adjusts current and voltage. It prevents overcharging, overheating, and short - circuits, ensuring the safety of your valuable devices.