Amazon.com: StarTech.com 4-Slot PCIe Expansion Chassis w/PCIe ...
From the manual of the Lenovo M93p (http://content.etilize.com/User-Manual/1029184064.pdf): The motherboard has 3 PCI Express slots: a "PCI Express x16 graphics card slot" a "PCI Express x1 card slot".
WS Z390 PRO｜Bo Mạch Chủ
... motherboard, with PCI Express slots designed to accommodate the power of multi graphics cards. Whether for professional graphics work, heavy duty multimedia ...
Computer Motherboard - Lenovo IS7XM Q77 MOTHERBOARD(SOCKET 1155 ...
DMB-AQ470 Industrial Motherboard with Intel® 10/11th Gen Core™ i3/i5/i7/i9 CPU, Q470 Chipset, 2× PCIeX16, 3× PCIeX4, 2× PCI, 6× COM, 13× USB, 2× LAN.