Optimal Performance: your for AD400Pro flash operates at efficiency with this essential replacement capacitor trigger board. Designed specifically for the AD400 Pro model, this electric capacity driver module is crucial for maintaining optimal flash performance. and Reliable: Crafted with high-quality materials, this spare part guarantees durability and reliability, ensuring your photography sessions proceed without a hitch. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:As Shown Material:Metal Package Contents: 1 * Capacitor Trigger Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.