1.Problem Overview
Some users have questions about the two USB ports included with the device: Why are two USB ports needed? What are their respective functions? This article will explain in detail the design rationale and functional boundaries of the dual USB ports to help users make the most of the in-vehicle interaction and multimedia features.
2.Basic Information on Dual USB Ports
This in-car display comes standard with two separate USB ports, USB 1 and USB 2. While they have distinct core functions, they also share certain common capabilities to meet the needs of various usage scenarios.
3.Detailed Explanation of Port Functions
Wired connectivity (USB 1)
This port is primarily designed for wired smartphone connectivity and supports mainstream in-vehicle connectivity protocols such as Apple CarPlay, Android Auto, and AirPlay, enabling stable data transmission and interactive control between your smartphone and the vehicle's display.
General-purpose expansion features (supports both USB1 and USB2)
Both USB ports can be used for the following common scenarios:
System firmware updates
Plugging in a USB flash drive to play local music (MP3 format)
Plugging in a USB flash drive to play local videos (MP4 format, resolution up to 720p)
4.Recommendations for Use
Everyday connectivity scenarios: Connect your phone via the USB 1 port to enable wired connectivity features such as CarPlay and Android Auto.
Multimedia / Upgrade: Insert a USB flash drive into any USB port to play local audio and video files or perform a system upgrade.
Multi-device usage scenarios:Both ports can be used simultaneously.
Use the USB1 port for connectivity features such as CarPlay,
and insert a USB flash drive into the USB2 port to play local multimedia files.
5.After-Sales Support
If you encounter connection issues or malfunctions while using the USB port, please contact our customer service team through the following channels:
(After-sales email:service@pempcar.com)
