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".
How to Install a New Graphics Card – From Hardware to Drivers
To begin with, you must line up the PCI-E component (4) on your graphics card and slot it into a spare PCI-E slot on your motherboard.
How to Check PCI Express Slot Version? - PC Guide 101
PCI Express slot is rectangular, protruding from the motherboard, and has many terminals on either side. PCI Express slots look different depending on their.