Having said that...(what does it mean?)

字面意思是 : 雖說...., 相等於中文的 : 話雖如此, 但是....... / 話得說回來......
例子讓你更明白
Having said that, I agree with your other points
我話雖然這麼說, 但還是同意你另一個觀點.

Judy: John, what do you think about this classroom?
John: Well, it's okay. The equipment's quite good. There's a computer, and there's everything you need, really. Having said that, it's a bit small.
由上面的對話可知，"Having said that" 被用來引導兩件事情之間的對比 - 這裡是引導正面與負面資訊之間的對比。事實上，我們也可以使用 "but" 來代替 "Having said that"。換言之，"Having said that" 意為「但是，可是，不過」。

Having said that = 說了這麼多