Tested and working.  Please note, I could not test all functions because I don't have the remote.  Please see pics to see what was tested.  Remote, song book, cables and manual are not included.  Manual can be found easily online.

The Arirang Karaoke 3600 HDD Plus is a multimedia karaoke system designed by the brand Arirang. This model offers a wide range of features, including Maseco-VN MIDI technology and compatibility with various formats such as DVD, VCD, CD, MP3, MP4, and USB. With these capabilities, users can enjoy a versatile karaoke experience with access to a variety of music sources. Additionally, the inclusion of a built-in hard drive adds convenience by allowing users to store their favorite songs for easy access during karaoke sessions.