Methodology v1.0
2 change(s): 2 moderate | Durability and material quality scores are low based on multiple reviews citing operating errors, wireless connectivity failures, incomplete page printing, buzzing noise under constant use, and overall reliability concerns. Brand reputation signal reflects mixed consumer feedback—HP is a major brand but the 4155e specifically has documented quality and reliability issues. High operating costs and lack of duplex printing further impact perceived value and durability assessment.