3.Use the Product Key matching.
The product Key can be find in a file called MID.txt
in the root of the iso or in the unpacked exe file.
It will look like this : Part Number: xxxE1-123456-123456...
What you want is the xxxE1 number
在你的ISO文件中根目录下,或者解压缩后的文件夹中有个叫做MID.txt的文件
里面有类似这样的内容: Part Number: xxxE1-123456-123456...
你需要的安装密钥就是这串的前5位