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Lenovo Thinkpad Ultra Dock AJ40 Disassembly

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PCB top side

Red boxes : Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs. Texas instruments: TPS51225

Left step down produce 5V

Right step down: produce 3V3 and 5V

There are three Eeprom on board : winbond: 25x10CLNIG , 8 pin, U4 and U10 (1M-bit SPI)

VLI marked IC: Via labs Usb port controllers VL820. https://www.via-labs.com/product_show.ph...

Synaptics VMM5322.Have features for HDMI and 2xDisplay port out.

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