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[* black] Take a peek at what powers those popping pixels:
[* [* red] Texas Instruments [http://www.ti.com/lit/ds/symlink/sn74lvc8t245.pdf|SN74LVC8T245|new_window=true] 8-bit dual-supply bus transceiver
[*

[*
orange] Texas Instruments [http://www.ti.com/product/buf16821|BUF16821|new_window=true] Programmable Gamma-Voltage Generator and Vcom Calibrator
[*

[*
yellow] Parade Technologies DP665 LCD Timing Controller (the same found in the last generation iMac 4K)
[*

[*
icon_note] We assume this is an Apple modified version of the [http://www.paradetech.com/products/displayport-lcd-timing-controller-products/dp663/|DP663|new_window=true]
[*

[*
green] Texas Instruments [http://www.ti.com/product/tps54218|TPS54218|new_window=true] 4.5 V to 17 V Input, 3 A synchronous step-down SWIFT converter
[*

[*
light_blue] Texas Instruments [http://www.ti.com/product/tps54320|TPS54320|new_window=true] 4.5 V to 17 V Input, 3 A synchronous Step-Down SWIFT converter
[*

[*
blue] Texas Instruments [http://www.ti.com/product/tps65168|TPS65168|new_window=true] High Resolution, Fully Programmable LCD Bias
[* [* red] Texas Instruments [http://www.ti.com/lit/ds/symlink/sn74lvc8t245.pdf|SN74LVC8T245|new_window=true] 8-bit dual-supply bus transceiver
[*

[*
orange] Texas Instruments [http://www.ti.com/product/buf16821|BUF16821|new_window=true] Programmable Gamma-Voltage Generator and Vcom Calibrator
[*

[*
yellow] Parade Technologies DP665 LCD Timing Controller (the same found in the last generation iMac 4K)
[*

[*
icon_note] We assume this is an Apple modified version of the [http://www.paradetech.com/products/displayport-lcd-timing-controller-products/dp663/|DP663|new_window=true]
[*

[*
green] Texas Instruments [http://www.ti.com/product/tps54218|TPS54218|new_window=true] 4.5 V to 17 V Input, 3 A synchronous step-down SWIFT converter
[*

[*
light_blue] Texas Instruments [http://www.ti.com/product/tps54320|TPS54320|new_window=true] 4.5 V to 17 V Input, 3 A synchronous Step-Down SWIFT converter
[*

[*
blue] Texas Instruments [http://www.ti.com/product/tps65168|TPS65168|new_window=true] High Resolution, Fully Programmable LCD Bias