lspci -tv

The lspci -tv command is a Linux utility used to list all PCI buses and devices connected to the system. When run with the -t flag, it outputs a tree-like diagram showing the hierarchy of buses, bridges, and connected devices on the system.

Breakdown

lspci: Lists all PCI (Peripherial Component Interconnect) buses and devices attached to your motherboard (such as GPUs, audio cards, and network adapters).
-t: Outputs a tree-like diagram showing the hierarchy of buses, bridges, and connected devices on the system.
-v: Add verbose information to the tree.

If you execute this on a mostly Intel based machine, it will output something like this:

Sample Output

-+-[0000:00]-+-00.0 Intel Corporation Core Processor DRAM Controller

 |           +-02.0 Intel Corporation Core Processor Integrated Graphics Controller

 |           +-16.0 Intel Corporation 5 Series/3400 Series Chipset HECI Controller

 |           +-1a.0 Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller

 |           +-1b.0 Intel Corporation 5 Series/3400 Series Chipset High Definition Audio

 |           +-1c.0-[01]--

 |           +-1c.1-[02]----00.0 Intel Corporation Wireless 7260

 |           +-1c.2-[03-04]--+-00.0 Ricoh Co Ltd MMC/SD Host Controller

 |           |               \-00.4 Ricoh Co Ltd R5C832 PCIe IEEE 1394 Controller

 |           +-1c.3-[05-0a]--

 |           +-1c.5 [0b]----00.0 Broadcom Inc. and subsidiaries NetXtreme BCM5761e Gigabit Ethernet PCIe

 |           +-1d.0 Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller

 |           +-1e.0-[0c]--

 |           +-1f.0 Intel Corporation HM55 Chipset LPC Interface Controller

 |           +-1f.2 Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller

 |           +-1f.3 Intel Corporation 5 Series/3400 Series Chipset SMbus Controller

 |           +-1f.6 Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem

 \-[0000:3f]-+-00.0 Intel Corporation Core Processor Quickpath Architecture Generic Non-core Registers

             +-00.1 Intel Corporation Core Processor Quickpath Architecture  System Address Decoder

             +-02.0 Intel Corporation Core Processor QPI Link 0

             +-02.1 Intel Corporation 1st Generation Core i3/5/7 Processor QPI Physical 0

             +-02.2 Intel Corporation 1st Generation Core i3/5/7 Processor Reserved

             \-02.3 Intel Corporation 1st Generation Core i3/5/7 Processor Reserved

Depending on what you are working on, one of these similar commands may be useful.

Variants

To check Wi-Fi (wireless) PCI information:
lspci -nnk |grep -iA3 "network"
To see a of all PCI devices and their drivers:
lspci -k
Don't see your device in the output:
Your hardware might be connected via USB instead of PCI.
lsusb

lspci -tv

Breakdown

Sample Output

Variants

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