TRIM erases — permanently
When you delete a file from an SSD, modern OSes send a TRIM command telling the drive's controller that those blocks are free. The controller then actually wipes those cells at the electrical level — usually within minutes. On an HDD, "deleted" files sit on the platter until they're overwritten. On an SSD, they're gone for real, fast. That's why deleted-file recovery on an SSD is often impossible if more than an hour has passed.