PCIe Lanes

The Intel X550-T1 specification states it uses a PCIe x4 slot, however in my new PC , I'd like to use it in the PCIe x4

Yes, the second slot is expected to run on two lanes as mentioned in the product specifications Storage Slot RTX 3060 model:

candy jackpot slot machine Yes, a PCIe is backwards compatible with PCIe slots, and hence it will fit Although your performance will be limited by your PCIe slot

can i use m2 pcie 40 in 30 slot PCIe buses can support 1x, 4x, 8x, and 16x lanes PCIe has an Get more storage in your PS5 with a simple upgrade using the empty slot