This report presents a Digital Floorplan Analysis of the HG11-PE874-2 die found inside the SQ1 application processor package. The SQ1 application processor was extracted from the Microsoft Surface Pro X laptop computer. The Microsoft SQ1 is an ARM-based system-on-chip (SoC) for Windows tablets, and is the result of a multi-year collaboration between Microsoft and Qualcomm. It is essentially a higher-tier version of the SD 855 processor, with significantly broader I/O capability, larger cache, and higher operating frequencies.