An All-in-One (AIO) assembly for a medical device is described. It comprises:a display unit having an input with an input impedance;a conductive sled (60);a motherboard (30) coupled to the sled, the motherboard comprising a processor (32) and a display driver;a breakout board (22) having an input coupled to the display driver and an output coupled to the input of the display, the breakout board output configured to provide an output impedance that matches the input impedance of the display; anda conductive cover (88) coupled to the sled, the conductive cover configured to form a volume when coupled to the sled, the motherboard and the breakout board disposed within the volume,wherein all non-conductive passages from the volume to the external environment have at least one cross-sectional opening having a continuous conductive perimeter with a maximum linear length within the opening of less than one quarter wavelength of a maximum shielding frequency.
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