Expansion:
1. Internal 3.5” Drive Bays 2 each, The ROG Strix Helious original website specifications before editing definitively stated one could expand the 3.5” Drive Bays: Up to 4pcs (Pre-installed 2 pcs). No one can find the additional drive bracket anywhere for sale in black or white color.
2. Internal 2.5” Drive Bays (4 up to 9), 2.5” Drive bays: Four on back of case (Page 18 manual) Six if one includes the pre-installed drive cage (Page 19 manual), Seven if one installed a 2.5” drive on the multifunction cover (page 7 and 8 manual). How can one install nine 2.5” drive bays? When the two brackets behind the motherboard are missing?
3. If ASUS provided the additional 3.5” drive bay and two additional 2.5” drive brackets that fit behind the motherboard one could install eleven 2.5” drives. Or one could install four 3.5” drives and Seven 2.5” drives.
4. No one can get the extra parts, so your stuck with either two 3.5” drives and five 2.5” drives. Or seven 2.5” drives and no 3.5” drives.
5. Fan Hub Connectivity: Who uses 3 pin DC fans today?