Pack of Two: Two sets of 4-USB port chargers in each package. Get more products for less money. SUPER FAST 4-PORT VERSION: Our 12V USB outlet is upgraded to four USB ports, 2 PD 30W + 2 QC 18W, which can charge four devices at the same time and up to 78W output. Compatible with PD2.0, QC2.0/1.0 and all other protocols, providing the fastest charging speed for all devices. 30W USB C and 18W USB A ports: The PD 3.0 port has a maximum output of 30W and can charge an i Phone 15 Pro from 0% to 65% in just 30 minutes. The QC 3.0 port has a maximum output of 18W and can charge most Android devices from 0% to 60% in 35 minutes (note: when all four ports are charging at the same time it is a shared output with a maximum total of 78W). PUSH-BUTTON POWER SWITCH: Designed with a power switch to control 4 USB ports, it prevents the battery from being drained by continuous power consumption after the engine has been started, effectively prolonging the life of the battery. WIDE COMPATIBILITY: