When evaluating LED keyboards, you must prioritize Switch Type (Mechanical vs. Membrane), as mechanical switches offer a longer lifespan of 50-100 million keystrokes. Ensure the Keycap Material is Double-shot PBT rather than ABS to prevent the legends from wearing off and to resist finger oils. For lighting, verify if the product supports Per-key RGB customization or just fixed rainbow zones, and check for Anti-ghosting/N-Key Rollover (NKRO) capabilities to ensure high-performance gaming or typing accuracy.