The 21st century has witnessed extraordinary improvement on educational technique technologically known as E-learning. Google Classroom has officially been introduced to Malaysian schools in 2019 and all teachers have been given a training regarding this platform usage since then. Yet, very petite is known about STEM teachers' acceptance of this facility. The objective of this study is to propose an improved conceptual framework of modified UTAUT2 by introducing three new constructs namely, Self-Efficacy (SE), Trust (T) and Personal Innovativeness (PI) towards E-Learning acceptance. However, this study is mainly based on an in-depth recent literature review derived from Scopus database.