4P100 Zone Player Back Panel Features1. Ethernet: This RJ45 port allows for a wired connection directly to the GW100 Gateway or directly to the network router.2. USB: Any USB compatible hard drive can share music content with the NuVo Wireless Audio System through this port.3. Audio In: This 3.5mm stereo input will accept any analog line level audio signal. The local audio source is amplified by the local player, as well as providing it as an addi-tional source selection in any other associated audio zones within the NuVo Wireless Audio System.4. Audio Out: This 3.5mm stereo output provides the local line level audio signal to an additional amplifier, powered subwoofer, or headphones.5. Left and Right Speaker Outputs: These binding posts provide an amplified audio signal to any connected speakers. The maximum output of the P100 is 40 watts stereo.6. AC: The switchable universal power supply will accept any incoming AC voltage worldwide.P200 Zone Player Back Panel Features1. Ethernet: This RJ45 port allows for a wired connection directly to the GW100 Gateway or directly to the network router.2. USB: Any USB compatible hard drive can share music content with the NuVo Wireless Audio System through this port.3. Audio In: This 3.5mm stereo input will accept any analog line level audio signal. The local audio source is amplified by the local Player, as well as providing it as an addi-tional source selection in any other associated audio zones within the NuVo Wireless Audio System.4. Audio Out: This 3.5mm stereo output provides the local line level audio signal to an additional amplifier, powered subwoofer, or headphones.5. Setup Mic: This 3.5mm input is for future use with future software upgrades.6. Left and Right Speaker Outputs: These binding posts provide an amplified local audio signal to any connected speakers. The maximum output of the P200 is 120 wattsstereo.7. AC: The switchable universal power supply will accept any incoming AC voltage worldwide.