An expression meaning 'with this' or 'if it's this (situation/option)'; used to indicate that given the stated condition, something is acceptable or appropriate.
これなら時間内に終わると思う。
I think we'll finish within the time if it's like this.
安くて早ければこれなら問題ないでしょう。
If it's cheap and quick, this should be fine.
これなら初めての人でも使いやすいはずだ。
With this, even a beginner should find it easy to use.