I really can't stand these irrelevant spam messages. I'm also searching for this question. I only know that Cheng Ming has restored some traditional interfaces, such as PS2 and COM. More specifically, for scenes such as education and financial office, Optiplex should keep pace with the times. The smaller the chassis, the smaller the office space ... and then continuous availability may be better (uncertain). In addition, to tell the truth, Baidu knows that it will not change the incentive mechanism and let garbage and useless information flood.