What is the difference between an expansion slot and a RAM card

The processor and memory slots are at a right angle to the expansion slots, putting them directly in line with the fan output

The term “PCIe card” and “expansion card” simply refers to hardware, like graphics cards, CPUs, solid-state drives , or HDDs, you may

expansion slot definition 2 is a slot that can interface with SATA , PCI Express

expansion slot function PCI Express , officially abbreviated as PCIe or PCI-e, is a high-speed serial computer expansion bus standard,