HEPA and Activated Carbon Filter – 3D printing certain materials such as ABS can generate potentially harmful UFP and VOC emissions.An updated 4.3 inch LCD Touchscreen with more features and functionality, plus the ability to upgrade with future software updates.Print Queue – Allows multiple users to send print jobs from different devices to the same printer via USB/ Wi-Fi/ LAN.An Ethernet socket allows you to connect your printer to a wired Local Area Network for maximum security.The H400+ is a more advanced than the H400 with improved hardware and software. It’s perfect for educators, hobbyists, and engineers who want to start 3D printing out-of-the-box and hassle free. The new Afinia H400+ 3D printer is the ultimate in affordability, reliability, and simplicity. This product has been replaced by the Afinia H440 3D Printer