This is an HP ProDesk 400 G4 Small Form Factor (SFF) PC, a business-class desktop computer designed for corporate, government, and education markets. 

Key features of the HP ProDesk 400 G4 SFF include:

Reliability and durability: Built to withstand daily use. 

Performance: Features like Intel Core processors and optional Intel Optane memory for enhanced performance. 

Expandability: Offers bays and slots for expansion, and optional ports for connecting multiple displays. 

Connectivity: Includes multiple USB ports and optional Bluetooth connectivity. 

Core i3 8th Gen