sid (unstable): 5.2.9-2
buster (testing): 4.19.67-2
stretch (stable): 4.9.189-3
jessie (oldstable): 3.16.72-1

Debian GNU/Linux device driver check & report

Compaq: Professional Workstation AP550

PCI IDWorks?VendorDeviceDriverKernel
80861a21YesIntel Corporation82840 840 [Carmel] Chipset Host Bridge (Hub A)agpgart
80861a23YesIntel Corporation82840 840 [Carmel] Chipset AGP Bridgeignore
80862418YesIntel Corporation82801AA PCI Bridgei810_rng
80862410YesIntel Corporation82801AA ISA Bridge (LPC)intel-rng,iTCO_wdtv2.6.25-
80862411YesIntel Corporation82801AA IDE Controllerata_piixv2.6.25-
80862412YesIntel Corporation82801AA USB Controllerusb-uhci,uhci-hcd
80862413YesIntel Corporation82801AA SMBus Controlleri2c-i801v2.6.25-
80862415YesIntel Corporation82801AA AC'97 Audio Controllersnd-intel8x0v2.6.25-
80861229YesIntel Corporation82557/8/9/0/1 Ethernet Pro 100e100v2.6.25-
9005008fYesAdaptecAIC-7892P U160/maic7xxxv2.6.25-
102b0519YesMatrox Graphics, Inc.MGA 2064W [Millennium]matroxfb_basev2.6.25-
10953112YesSilicon Image, Inc.SiI 3112 [SATALink/SATARaid] Serial ATA Controllersata_silv2.6.25-

The southbridge is misidentifyed, no MiniPCI ethernet cards, but:
0000:00:1f.0 ISA bridge: Intel Corp. 82801AA ISA Bridge (LPC) (rev 02)
0000:00:1f.1 IDE interface: Intel Corp. 82801AA IDE (rev 02)
0000:00:1f.2 USB Controller: Intel Corp. 82801AA USB (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 82801AA SMBus (rev 02)
The machine was sold vith different video options, but not this Matrox card. The SATA controller is a cheap PCI add-on card.