When evaluating LCD Display USB modules, you must prioritize Interface Compatibility (USB-C vs. Micro-USB) and Display Technology (IPS for better viewing angles or TN for cost-efficiency). Key metrics include Resolution (e.g., 128x64 for basic readouts or 1080p for secondary monitors), Brightness levels (measured in nits, ideally >300 for indoor use), and Refresh Rate (60Hz is standard for smooth video). Ensure the Controller IC (like ILI9341 or SSD1306) is compatible with your existing software stack or drivers.