Thank you for viewing. This item was purchased new and used about 4 or 5 times before being stored. Upon listing, I confirmed that it can input notes by connecting it to the music notation software Sibelius and a keyboard. The item will be shipped as the main unit only. You need to download the driver from the following site: https://www.roland.com/jp/support/by_product/um-one_mk2/updates_drivers/ Copied and pasted from the sales site below: Compatible with Windows/Mac/iPad. A USB MIDI interface that simply connects MIDI devices. Specifications ■ MIDI Interface *Since the slide switch is not exposed externally, please insert a thin object such as a clip to switch. The UM-ONE mk2 is a cable-integrated USB MIDI interface that simply connects computers and MIDI devices. You can connect MIDI keyboards, electronic pianos, MIDI sound sources, etc., that do not have a USB port to a computer. The UM-ONE mk2 supports Windows/Mac as well as iPad (*1). It is also useful for linking with iPad applications that support MIDI devices. ・Cable-integrated 1IN/1OUT USB MIDI interface. ・Equipped with an LED indicator to check the sending and receiving status of MIDI signals. ・Supports three platforms: Windows/Mac/iPad (*1). ・Supports USB bus power and is useful in mobile environments. *1: An Apple Camera Connection Kit is required separately. ■ Specifications Connectors: MIDI IN cable (CONNECT TO MIDI OUT) x 1 (1 system), MIDI OUT cable (CONNECT TO MIDI IN) x 1 (1 system), USB cable External dimensions / Weight: Width (W) 60 mm Depth (D) 30 mm Height (H) 14 mm Weight 100 g