The HP Color LaserJet Pro MFP M477 series does support A3 size paper, but only under specific conditions. Here’s what you need to know: 1. Tray Compatibility: • The M477 series is primarily designed for smaller paper sizes like A4, Letter, and similar dimensions. • It does not natively support A3 paper due to its tray and printing mechanism limitations. 2. Supported Paper Sizes: • The maximum supported paper size is 8.5 x 14 inches (Legal). • A3 (11.7 x 16.5 inches) exceeds this limit. If you need A3 printing, you would need a different printer model, such as one from the HP OfficeJet Pro or HP DesignJet series, which explicitly supports larger formats like A3. Let me know if you need recommendations!