How to tell if a laptop has free PCI-E slots without opening it to check?

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Generally speaking, there are five physical sizes of PCIe cards: x1, x4, x8, x16, and x32 (FYI, PCIe x32 does exist with a maximum of 32 lanes,

However, there is usually a cost increase incurred with higher lane counts PCIe Slot Differences Photo from 20050531pci-express-cards The Need for a PCIe Interface Peripheral Component Interconnect slots are such an integral part of a computer's architecture that most

book of ra classic slot Two single-wide full-length x8 gen4 slots One single-wide half-length x4 gen3 slot preconfigured with the Apple IO card The Apple Thunderbolt Generally speaking, there are five physical sizes of PCIe cards: x1, x4, x8, x16, and x32 (FYI, PCIe x32 does exist with a maximum of 32 lanes,