● The CD case (paper sleeve) is unopened and has been kept as a spare. The booklets are also in very good condition, having only been taken out for photography. All the necessary numbers, manuals, etc. for installation are included. ● This is equipped with a valuable editor that can edit/control the YAMAHA MU sound source series and PLG board series, so I think it will be highly useful for those who want to make full use of those hardware. ● This is the last version of the sequencing software, excluding XGworksST (a feature-limited version of SOL), which is a DAW software. Those familiar with XGworks 2.0 and 3.0 can use it with almost no manual required. ● The major difference from the previous version is that an updater is distributed. By using the updater (Ver. 4.0.7) that can be downloaded for free from the manufacturer's website, it can be used on 64-bit OSs from Windows 7 onwards through compatibility troubleshooting. The general method is to install it first with compatibility troubleshooting and then immediately update the version, but detailed instructions are included in the Read me within the updater, so please be sure to read it. ※ Although details are omitted here, if it doesn't work, you can also search for "How to use YAMAHA XGworks 4.0 on Windows 10 or Windows 11" etc. as a reference. (I am using it on Windows 10, but there is no guarantee that it will work on all computers and OSs) ● To use USB-connected models such as the MU2000 on a 64-bit OS, please download the USB-MIDI Driver 64-bit version from the manufacturer's website and use it. ● This is not very relevant for those who mainly use the MU sound source series, but to use the software sound source S-YXG50 on a 64-bit OS, you need to search the internet for "S-YXG50 64bit version" or investigate "How to use S-YXG50 32bit in a 64bit environment", etc., and take an extra step. ● Thank you very much for reading this far. Please understand that I cannot provide complete support or compensation as this is a personal listing. ● Packaging may use recycled materials.