がついて

… is attached / comes with

→ が
phrase Rare #31,331
… is attached / comes with The meaning of つく varies with context: it can also mean that something is gained or develops, as in 自信がつく (gain confidence).
JA: この部屋には大きな窓がついています。
EN: This room comes with a large window.

よい庭がついていれば家の価値を高めるでしょう。

Having a nice garden would add value to the house.

去年、君が手元にどれだけ金を持っているか、だいたい見当がついてしまったんだ。

Last year, I got a pretty good idea of how much money you had on hand.

やっとあなたに連絡がついてよかった。

I'm glad I finally got in touch with you.

一度でも勝てると自信がついていいんだけれどね。

It would be nice if I could win even just once—it would give me confidence.

一度悪い習慣がついてしまうと、それを取り除くのは難しい。

Once you develop a bad habit, it’s difficult to break it.