1x pci-e x16 slot: ASUS WS C621E Sage EEB Server Motherboard Dual LGA .... Amazon.com: ACTIMED PCI-E X1 to SATA 3.0 Controller Card, 2-Port ... . Mainboard ASUS TUF GAMING Z590-PLUS.
Mainboard Supermicro MBD-X11DPX-T ; Expansion
Slots ; PCI-Express. 2 PCI-E 3.0 x16 slots (HSSI) 2 PCI-E 3.0 x16 slots (or 4 PCI-E 3.0 x8 by Mixed) 4 PCI-E 3.0 x8 ...
Slots. ○
free slots, 2x PCI; optional: 1x PCI & 1x PCIe (x16); 2x PCIe (x4, x16); with card retainer. ○ Number of
PCI slots, 2; Optional. ○ Number of PCI slots ...