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    Advantages: I tested it with the hard disk test software, and it is obvious that the original 1TB solid-state hard disk is fast, and the other is a 1TB mechanical hard disk, which is obviously much slower, and no bad areas or bad blocks were found in the quick scan, of course I can also choose a slow full scan, but due to the timing of recording time, I didn't wait slowly. (But remember, if another mechanical hard drive is installed in the computer, it will slow down the speed of quick writing)Disadvantages: The power switch was not very smooth when the computer was first mailed. Sometimes it took several times to successfully start the computer. Later, I disassembled the front panel (just pull up the three fixing bolts on the DVD-ROM You can open the front panel), and finally found that the buttons are not very smooth, spray the buttons with WD-40 to ensure that they are loose and smooth, then you can put the cover back (the cover is hung into the case from the bottom) if it is 200 US dollars Left and right computers, personal use is enough for me!What's more: the matching keyboard and mouse are not easy to use, so I changed all of them from a certain big brand, which is more comfortable to use!