i want to say that this product is very usefuland very easy to use warranty will be provided as pdf in this hard driveand you will get a setup for window and macyou can easily setup your drive passwordnow its time to talk about transfer speedso when you transfer big single file it will show 125 to 150mbs speed but if you if you will transfer big files full of short files of size in kbs it will show 125 kbs to 5mbs speed so it depends on type of filealso it