How many backlogs are the maximum for MS in computer science from the USA?

The acceptance rate, with a backlog for MS in the US, is similar to all other courses and programs. Many universities in the US may accept up to 15 backlogs for MS, and if you have excellent GRE or GMAT scores, there are great chances for you to get accepted.

The list of US universities accepting backlogs is -

Kent State University
Wright State University
Wichita State University
Pace University
Clarkson University, New York,
Marist College, New York.
You can get selected at US universities accepting backlogs if:

You have a good-high GPA
You show an excellent background in terms of work experience, co-curricular, internships, LORs, etc.
You have a backlog in an unrelated subject
You have few backlogs and an inactive backlog status.
 

If you have any further questions, let me know, or else you can directly contact Study Abroad Experts here. They will analyse your profile and not just help you with all the information but also assist you in the entire application process for FREE. 

Hope this helps!