PCIe vs : Is PCIe Worth the Upgrade?

The SSD should work because the _2 slot supports both NVME and SATA but the speed will of cause be lower than the main _1 port Another

Two types of PCIe slot on an Asus H81M-K motherboard Various slots on a computer motherboard, from top to bottom: PCI Express x4; PCI Express x16; PCI Express

pcie x16 expansion slot x4, x8, or x16 lanes available in a single PCIe slot For instance, PCIe x4 refers to a Gen 3 expansion cardslot with 4-lane configurations

pcie 1 slot B650M-HDV · Build for The Most Advanced PC · Optimized VRM Design · DDR5 Memory with Protection Circuit · Reinforced Steel Slot