Midle Tower, 1xLGA1151, up to 64GB (4 slots) DDR4, 4x3.5" fixed drive bay

Midle Tower, 1xPSU, 2xLGA3647, up to 1TB (16 slots) DDR4, 4x3.5" fixed drive bay

Tower/4U, 1xPSU, 2xLGA3647, up to 2TB (16 slots) DDR4, 8x3.5" SAS/SATA hot-swap drive bay

Tower/4U, 1xPSU, 2xLGA3647, up to 2TB (16 slots) DDR4, 8x3.5" SAS/SATA hot-swap drive bay

Tower (4U), 2xPSU, 2xLGA3647, up to 2TB (16 slots) DDR4, 8x3.5" SAS/SATA hot-swap drive bay

Midle Tower, 1xPSU, 1xLGA2066, up to 512GB (8 slots) DDR4, 4x3.5" fixed drive bay