How to fix the problem of cash drawer and printer

i am working with sambapos3 my problem is that my printer doesnot print when i punch the order and cash drawer doesnot open automatically

Have you got two users? Why? Seems very off that two people have asked exactly t same question about v3 and same time…
See reponce on your other post.

No there is no two users … is there any solution to fix that problem …

You need to go to www.sambapos.org this forum is for v5.