Bottom Card Slot in XPS 8700

I currently have Creative Sound Blaster Audigy FX PCIe 5.1 Sound Card installed in the second PCIe x1 below the graphic card PCIe x16 slot.

My question is after reading a thread on this forum that explains that the PCIe x4 is only wired to perform as an X1 slot, can I switch the sound card to that slot even though the slot is longer than the other two PCIe x1 slots?

Here's the thread I'm referring to... en.community.dell.com/.../20661808