Power-on confirmed! I have only confirmed that it powers on, as I don't know what it's used for! I don't understand the other accessories at all! However, it's in very good condition with the original box, so please purchase it if you understand its value! Please refrain from purchasing if you are a nervous person or a malicious complainer. The EPSON HC-20 is a full-size keyboard portable computer equipped with a microcassette drive. - Brand: EPSON - Model Name: HC-20 - Features: Microcassette drive equipped - Keyboard Type: Full-size keyboard - Display: LCD display Thank you for viewing.