SD-90, a hardware sound module with digital audio and MIDI capabilities, featuring attack, decay, and release settings. Power-on, panel operation, and display have been confirmed. Sound generation via MIDI input has been confirmed. USB connection has not been tested. - Model: SD-90 - Brand: EDIROL - Features: Digital audio, MIDI instrument - Parameter Settings: Attack, decay, release adjustable - Connectors: USB, MIDI IN/OUT - Display: Equipped with an LCD display Thank you for viewing.