Officially, Avid Pro Tools HD 10.3.10 is designed for older Intel-based Macs. It is on macOS 10.9 (Mavericks) or any newer versions including High Sierra, Mojave, or the latest macOS Tahoe. Qualified Operating Systems:
Fully supported for HDX, HD Native, and HD Accel systems. avid pro tools hd 10310 for macos
4GB minimum; 8GB or more strongly recommended for complex sessions. Officially, Avid Pro Tools HD 10
The most stable and recommended version. and HD Accel systems. 4GB minimum
Pro Tools 10.3.10 remains a pivotal version in Avid’s history, marking the final release of the 32-bit era. For many engineers, it is the last "bridge" to legacy TDM hardware and the only version that allows the simultaneous use of RTAS/TDM and AAX plugins.
Supported for HD Native and standard Pro Tools. Hardware Essentials: