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

pcie x1 slot   Dan pcie2 slot

Magewell PCIe cards use PCIe interfaces and above Computer motherboard may have PCIe slots compatible with x1, x4, x8 and x16

Every PCIe slot supports its own number of CPU lanes X16 has 16 Lanes support, X8 has 8 Lanes support, X4 has 4 lanes support and x1 has x1 Lane x2 Lane x4 Lane 250 MBs 500 MBs 1 GBs 500 MBs 1 PCI Express and PCIe are registered trademarks of PCI-SIG NVMe is a

fortune gems 2 slot-tada games Buy PCI-E PCI Express X1 Adapter Riser Card PCI E PCIE X1 to X1 Slot Converter Card 90 Degree for 1U Server Chassis at Aliexpress for  This PCIe x1 to PCIe x16 Slot Extension adapter provides enhanced compatibility between motherboards and a variety of PCI-Express expansion cards, allowing you