A:AnswerThis unit weighs .62 lbs. Your CPU should have no issues with this device. The official specs can be found here. https://www.asus.com/us/Optical-Drives-Storage/SDRW08D2SU/specifications/
A:AnswerAs long as your have the correct USB connecting port, it will work on any Windows laptop or Macbook. Will mostly likely work on a Linux OS with the right driver. But I have not tried that.
A:AnswerYes, you can use it to watch DVD/HD movies. You will need video player software to play movies. Real Player software was not tested for compatibility.