PCIe Expansion Kit adds extra slots

What is the purpose of the PCIe X1 slot pcie expansion slot Would a RAID card require cooling if I disconnect the expansion slot cover and use standoffs to mount it to the back of the case? pciex4 slot IPCIE16XD11 is Multiple SFF-8654 x4 to PCIe x16 Slot Expansion with Broadcom MegaRAID 9560-16i, 9560-8i, 9580-8i8e, 9500-16i, 9500-8i,

pcie slot pinout “I would wholeheartedly recommend this to anyone looking for a PCIe FireWire card ” Product: PCI-E to 8 Port USB Expansion Card 5Gbps,