There shouldn't be a trail if you get the Toshiba Stack software from support.toshiba.com. In all of my testing, in both official and forced drivers for the toshiba stack, I never encountered a trial when using software from that site. But I have run into trials when getting it from other places.
AMD Threadripper Pro 5975WX PBO+200 | Asrock WRX80 Creator | NVIDIA GeForce RTX 4090 FE | 64GB DDR4-3600 Octo-Channel | Windows 11 23H1 | (details)
MacBook Pro 14in | M1 Max (32 GPU Cores) | 64GB LPDDR5 6400 | macOS 12