This is the AXDI-MB1 2001-Up Mercedes-Benz Radio Replacement Interface.

• Provides accessory power (12-volt 10-amp)
• Retains R.A.P. (retained accessory power)
• Provides NAV outputs (parking brake / reverse / speed sense)
• Pre-wired ASWC-1 harness (ASWC-1 sold separately)
• Designed for non-amplified models or when bypassing a factory amp
• Retains balance and fade
• Micro B USB updateable