The hardware inside the NDDA-W55 is highly sensitive to media formats.
The main slot for both music discs and the navigation loading disk. 4. Unlocking the System (Security Code) Ndda W55 Manual 19
One of the strongest reasons to keep the NDDA‑W55 alive is the extensive ecosystem of adapters that bring modern features to this classic unit. The hardware inside the NDDA-W55 is highly sensitive