The optional B4 mATX Vertical AeroDeck accessory enhances airflow performance when the case is used in the vertical orientation. This add-on creates a direct airflow path to the GPU and expands fan capacity by supporting up to three 120mm fans or two 240mm fans. It also incorporates a wood panel design that visually matches the cases aesthetic, along with a magnetic PVC dust filter and tempered glass side panels to showcase the installed fans. The Vertical AeroDeck accessory requires the case I/O to be relocated