3. lspci - list all PCI devices
$ lspci
00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 01)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
$ lspci -tv
-[0000:00]-+-00.0 Intel Corporation 82945G/GZ/P/PL Memory Controller Hub
+-02.0 Intel Corporation 82945G/GZ Integrated Graphics Controller
+-1b.0 Intel Corporation N10/ICH 7 Family High Definition Audio Controller
+-1c.0-[0000:01]----00.0 Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
+-1c.2-[0000:02]--
+-1c.3-[0000:03]--
+-1d.0 Intel Corporation N10/ICH7 Family USB UHCI Controller #1
+-1d.1 Intel Corporation N10/ICH 7 Family USB UHCI Controller #2
+-1d.2 Intel Corporation N10/ICH 7 Family USB UHCI Controller #3
+-1d.3 Intel Corporation N10/ICH 7 Family USB UHCI Controller #4
+-1d.7 Intel Corporation N10/ICH 7 Family USB2 EHCI Controller
+-1e.0-[0000:04]----00.0 Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
+-1f.0 Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge
+-1f.1 Intel Corporation 82801G (ICH7 Family) IDE Controller
+-1f.2 Intel Corporation N10/ICH7 Family SATA IDE Controller
\-1f.3 Intel Corporation N10/ICH 7 Family SMBus Controller