Can video card that is 2.1 x16 work in a PCIe x16 slot, which is less than 2.1
I am purchasing a video card which works with a PCI-e 2.1 x16 slot. If I simply have a PCIe x16 slot will it be compatible with the card. The computer is a Lenovo M91p. I am not sure if my slot would be referred to as 1.0?