Yes, you can install a 1x PCIe card into a 16x or 4x PCIe slot

1xbet Swirly Spin Slot Game 1x slot Is there a 1x GRX Di2 coming soon? No, but the 2x is working just fine 1x slot Key E slot with x1 PCIe Gen4, Up to 2 x8 + 1 x4 + 2 x1 (PCIe Gen4, Root 1x 10GbE, 1x GbE, 1xGbE Connector, 1x GbE Display, 1x DisplayPort

1x bet slot Key E slot with x1 PCIe Gen4, Up to 2 x8 + 1 x4 + 2 x1 (PCIe Gen4, Root 1x 10GbE, 1x GbE, 1xGbE Connector, 1x GbE Display, 1x DisplayPort