Korg MEX-8000

“KORG MEX-8000 Memory Expander with AC adapter working 100%
Has a new CR2032 backup battery installed so it will retain patch data.
All 4 banks are currently loaded with different DW/EX8000 patch data.
Comes with new AA batteries so it can operate with or without the ac adapter.
Comes with owners manual.” Click here to visit listing on eBay