Can I change each prefab clone for different value ?

Hello,

I am a new to Unity. I have a problem about prefab clone. I have a prefab and it have script that control its value. When I clone it and try to change its value. All my clone value have changing too.

Can I change a value of each prefab clone and don't affect to the other clone ?

This is script for my prefab.

 private float minSpeed=1.0f;
 private float maxSpeed=3.0f;
 
 void Update () {
 
         minSpeed += 0.5f; 
         maxSpeed += 1.0f;
 
                //When I change minSpeed and maxSpeed. All clones are change its speed too. But I want to set a different speed for each clone.
 
         float charSpeed = Random.Range (minSpeed, maxSpeed);
         gameObject.transform.position += new Vector3 (-charSpeed * Time.deltaTime, 0.0f, 0.0f);
 
 }

Thank you for solution.