IPA: /ˌʌn.ɪnˈtɪɡ.reɪ.tɪd/
KK: /ʌnˈɪntɪɡreɪtɪd/
Not combined or joined with other parts or elements; existing separately.
The unintegrated systems caused confusion among the staff.
Unintegrated → It is formed from "un-" (meaning not) and "integrated" (from Latin "integratus", meaning to make whole or complete). The word "unintegrated" means not made whole or not combined into a unified whole.
Think of 'not' ('un-') being added to 'made whole' ('integrated') — that's why unintegrated means something that is not combined into a whole.