45c6462.pdf - (English) Hardware Installation and Replacement Guide 45c6480.pdf - (Romanian) Hardware Installation and Replacement Guide 45c6524.pdf - (English) User Guide 45c6545.pdf - (English) Hardware Maintenance Manual lenovo_desktop_bios_wmi_deploy_guide.zip - Lenovo BIOS Windows Management Instrumentation Interface Deployment Guide for Desktop – Think Series Products