Features built-in WiFi and an RJ45 connector for internet. Understanding the File Name HV553 PC821: The specific model number of the motherboard.

Indicates a regional version of the software, often containing local language settings and pre-configured channel/app settings for that region.

This is the first segment of a compressed archive. You will need all subsequent parts (part02, etc.) to successfully extract the full firmware file. How to Use This Firmware