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	Function Description	X5500
	6-pin Function Header Setting Jumper Name Usage Mute  Short - Speaker mute disabled  Open - Speaker mute controlled by GPIO22               GPIO22 high - Mute disabled               GPIO22 low  - Mute enabled (no sound) SDZ  Short - 60W amplifier in shutdown mode  Open - 60W amplifier in working mode PWR  Short - Power on when power applied  Open - For use with X710 power mgmt board
	Board Assembly
	❶ Push a screws (M2.5*6mm) up through the mounting hole on the underside of the Raspberry Pi.   ❷  Screw the spacer (M2.5*20mm) down until it is hand tight         ❸ Plugs the X5500 board straight into your Raspberry Pi B+'s GPIO header and screw down (M2.5*5mm)   ❹ Optional -To use with X710 power mgmt board a) Unscrew 4 screws and spacer on the topside of X5500 b) Screw the M2.5*20 M/F spacer down until it is hand tight c) Remove the "PWR" jumper from 6-pin function header         ❺ a)Plugs the X710 board straight into your X5500's GPIO    header and screw down (M2.5*5mm) b)Plug in the 2-pin cable into the female connectors of "5V    out" on the X710 and "PWR EN" on the X5500.   ❻ Plug in the 2-pin cable into the female connectors of "5V out (not controlled)" on the X710 and "5V out" on the X5500.         ❼ Optional -To use with X850 / X872 / X860 SSD storage board a) Unscrew 4 screws and spacer on the bottom side of Rpi b) Screw the M2.5*12 M/F spacer down until it is hand tight   ❽ Attach the X850 / X872 / X860 SSD storage board to the Rpi's spacers and secure in place using the M2.5*8 M/F screws.
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