ChessBase 10 Portable is a lightweight, portable version of ChessBase 10 designed to run from removable media (USB stick, external drive) without installing on the host computer. It offers core database management, game analysis, and search features useful for players and coaches who need mobility.

Here is a detailed review based on the context of using older ChessBase software, contrasting it with modern alternatives. Overview of "ChessBase 10 Portable"

allows you to open your games in almost any chess software, including the ChessBase Mobile App or free viewers like Modern Alternatives

Technical Overview: ChessBase 10 and Portable Game Notation (PGN) ChessBase 10

These sites provide that CB10 can read: