I purchased this a few years ago on a flea market site, described as "no sound, but otherwise functional." ※ There is also damage to the screen and casing. I haven't used it much since I bought it. When I opened it up recently, it froze after about 10 minutes, so I've decided to initialize it and get rid of it, especially since I have several other machines. I charged it, operated it with the trackpad, and completed the initialization. It's a model with 16GB of memory and a 256GB SSD. I didn't notice any problems with the keyboard or trackpad during use. I don't have time to tinker with it, so I don't know the details. It might work smoothly if you're lucky. Of course, it could also freeze up and be unusable. Basically, it's junk, so no returns or exchanges. Recommended for those who can use it for parts or repair.