**Ready for versatile work environments** Easy to deploy, sleek, and feature-rich, the HP ProOne 400 20 All-in-One PC features a contemporary design with business-class performance, collaboration, security, and manageability features. **Functionality for the multi-device world** Provide users with multiple devices options for how they work and stay productive. New flexibility is delivered by the HP ProOne 400 20 AiO that can be used as a full PC or as an additional display for another desktop or laptop PC **HP exclusive security and manageability** Help prevent data breaches and downtime with HP Sure Sense4, HP Sure Click5, and HP BIOSphere Gen5.6 Simplify management with the HP Manageability Integration Kit. **Powerful options** Choose a high-performance 10th Gen Intel® Core™ processor2, powerful memory, and graphics