To view the list of PCI devices present in a given computer (including installed expansion cards and devices on the motherboard) in Linux Debian, Ubuntu, CentOS or RedHat - use this command:
$ sudo lspci
The output will look something like this:
00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04)
00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 05)
00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b5)
00:1c.2 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 3 (rev b5)
00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b5)
00:1c.4 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 5 (rev b5)
00:1c.5 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 6 (rev b5)
00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 05)
00:1f.2 IDE interface: Intel Corporation Cougar Point 4 port SATA IDE Controller (rev 05)
00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 05)
00:1f.5 IDE interface: Intel Corporation Cougar Point 2 port SATA IDE Controller (rev 05)
02:00.0 USB Controller: Device 1b6f:7023 (rev 01)
03:00.0 IDE interface: Marvell Technology Group Ltd. Device 917a (rev 11)
04:00.0 PCI bridge: Integrated Technology Express, Inc. Device 8892 (rev 10)
05:00.0 Ethernet controller: D-Link System Inc RTL8139 Ethernet (rev 10)
05:01.0 Communication controller: NetMos Technology PCI 9835 Multi-I/O Controller (rev 01)
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
07:00.0 USB Controller: Device 1b6f:7023 (rev 01)
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