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Main -> PCI Devices -> Vendor 8086 -> Device 8086:3b28

Name: 5 Series/3400 Series Chipset 4 port SATA IDE Controller


Name: Ibex Peak 4 port SATA IDE Controller


2008-08-29 02:28:44

Name: 5 Series/3400 Series Chipset 4 port SATA IDE Controller


2009-09-16 01:18:26

Are you sure that this is a 4 port controller? When I switch from AHCI to IDE mode in the BIOS, the device "8086:3B29" (4 port SATA AHCI cortroller) vanishes, instead 2 IDE ports emerge: "8086:3B2D" (listed here as a 2 port device) and this one: "8086:3B28". The laptop I'm currently testing has an optical drive, a hard disk, and an external SATA connector, definitely not needing up to 6 devices (even if there is another internal hard disk slot).


2014-06-07 19:28:00

These chipsets have 6 ports, a 4 port and a 2 port device. Most of the ports are likely disabled in laptops but enabled on most desktop motherboards. When in AHCI mode, the dmesg log will show you a number of dummy ports (I get three messages like "ata4: DUMMY" on my ThinkPad, different chipset though).


2014-06-07 22:16:09

You're obviously right, I've found the same devices on a 2nd laptop and the dummy devices exist on both of them for the unused ports. Of the remaining three are two in use (CD & HD) and one is not connected (external port).

However, these two devices have only one equivalent when in AHCI mode.

2 possibilities:

A) The 2 port device is disabled (and invisible on the bus) entirely in AHCI, because the active ports are on the 4 port device, but how do they show up as dummies in dmesg?
B) It should read "6 port" instead of "4 port" on the AHCI device.

The 2nd laptop shows in dmesg in IDE mode 2 ports active on the 4 port device.


2014-06-23 01:18:41



Id Name Note
17c0 10d2Medion Akoya E7214 Notebook PC [MD98410]
144d c06aR730 Laptop

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