How can I have PCI or PCI-Express on Raspberry PI?

The 1-lane PCIe Gen 2 interface in Broadcom BCM2711 processor is exposed in Raspberry Pi CM4 I'm struggling to find clear definitions of

On Indiegogo: a $134 “Over:Board” Mini-ITX carrier for the Raspberry Pi CM4 with a full-sized PCIe slot, GbE, COM, 2x HDMI, a USB hub,

raspberry pi 4 pcie slot FAQ · All PIPs are just an extension of the Raspberry Pi 5 PCIe interface Apart from whether the chip on the PIP board supports

raspberry pi pcie slot AudiobookRASPBERRY PI: 3 in 1, Raspberry Pi Mastery: Unlocking the A PCIe x16 slot will have 16 lanes of bandwidth to use when