"Next to an ATX motherboard, the case has room for GPUs up to 390mm (360mm with radiators), 180mm power supplies (220mm without the PSU cage), two 3.5-inch drives and five 2.5-inch SSDs."
Why they offer five 2.5" slot and only two 3.5" slot ?????
If you want speed, you will choose NVME SSD which offer more performance than 2.5" SATA SSD. I do not think that many of people who purchase this case will use U2 2.5" SSD which is rare and more expensive.
If you want space, you will choose 3.5" HDD which offer more storage capacity than any 2.5" Drive (HDD or SSD).