The inside of the Seiran is pretty plain and simple. Towards the front of the case are the 5.25” drive bays with tool-free installation devices.
Like most new cases, the Seiran has an internal USB 3.0 connector as well as your standard connectors. You’ll also find a couple of extra cables inside which you’ll need to connect to the front and side fans, allowing you to change their speed/LED brightness. There are also six included HDD/SSD racks, allowing you to install multiple drives.
Towards the back of the case is the cutout for airflow for the bottom mounted PSU and reusable red mesh expansion slot covers.
Towards the top is the blue fin 120mm exhaust fan, CPU cooler cutout, and pre-installed motherboard standoffs.
The opposing side of the case shows the plenty of room available for cable management as well as the 9 additional tool-free devices for 5.25” drives, giving you an even more secure installation.
The six included drive racks are composed of plastic and are pretty sturdy. There’s a cutout on the bottom for airflow as well as plenty of holes for different installation positions.