This document provides a customer-friendly reference for common LED display HUB interface pin definitions, including HUB75/HUB75E, HUB08, and HUB12. It explains typical 16-pin IDC connector orientation, common signal names such as RGB data, A/B/C/D/E address lines, CLK, LAT/STB, OE/EN, GND, and the basic wiring functions of each interface type. The guide is intended to help customers identify compatible LED modules, receiving cards, and HUB boards during maintenance, replacement, or project selection. Because HUB pin definitions may vary by module supplier or controller brand, the document also reminds users to confirm the actual module silkscreen, receiving card manual, scan type, and supplier wiring diagram before installation.

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