Martin Lighting P3 PowerPort 1500 Indoor Power & Data UnitMany of the Martin Creative LED fixtures run at 48Vdc and require an external power supply unit. The P3 PowerPort 1500 is one option that is compatible with the Martin Creative LED portfolio. The P3 PowerPort 1500 is an integrated power supply and data processor for the Martin range of creative LED video products. When driven by one of Martins award winning P3 System Controllers, it combines stable power delivery with high speed, high capacity video