What is the difference between a PCIe x16 slot and an express card

What is the difference between a PCIe x16 slot and an express card pcie x16 expansion slot Buy JMT PCI-E x16 1 to 2 Expansion Card Gen4 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port online at low price pcie slot qrelease Tech Specs General Product Type Riser card Expansion Connectivity Expansion Slots 1 1 x PCI Express x16 - full-height ; 1

pcie slot qrelease Some common types of expansion slots include peripheral component interconnect , PCI express , accelerated graphics port , and industry standard

pciex16 slot Expansion Chassis · Fanless PC · Front IO · HMI Panel PC Systems · ISA Slot Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8 connection  584 votes, 61 comments My MB is an MSI Z390-A Pro and I have a 3070 in the first PCIe x16 slot I want to put a x4 SSD expansion card