PCI?

[LordError]

Hi
What’s Unknown PCI On This Image?
My Router Board Have 2 PCI Slot
Why Thats Show 4 Slot?

[LordError]

no one knows?

[mkx]

Probably it’s some on-board device, connected to PCI bus. If you’d show whole name/description (possibly from CLI using command /system resource pci print detail) it would be easier to identify devices. I wouldn’t be surprised if it’s about ethernet controllers or something like that.

[pe1chl]

When you see this, it usually means there is a PCI-to-PCIx bridge chip on the board that you have added to connect between the bus and the chip that provides the actual function of the card.
For example, in my Linux system I have a 4-port serial card and it shows up like this:

05:00.0 PCI bridge: Texas Instruments XIO2000(A)/XIO2200A PCI Express-to-PCI Bridge (rev 03)
06:00.0 Serial controller: Timedia Technology Co Ltd PCI2S550 (Dual 16550 UART) (rev 01)

In another system there is an 8-port controller that shows:

10:00.0 PCI bridge: PLX Technology, Inc. PEX 8111 PCI Express-to-PCI Bridge (rev 21)
11:00.0 Serial controller: Moxa Technologies Co Ltd CP168EL (8-port RS-232 Smart PCI Express)

[LordError]

Probably it’s some on-board device, connected to PCI bus. If you’d show whole name/description (possibly from CLI using command /system resource pci print detail) it would be easier to identify devices. I wouldn’t be surprised if it’s about ethernet controllers or something like that.

that’s unknown !!!

[LordError]

When you see this, it usually means there is a PCI-to-PCIx bridge chip on the board that you have added to connect between the bus and the chip that provides the actual function of the card.
For example, in my Linux system I have a 4-port serial card and it shows up like this:

05:00.0 PCI bridge: Texas Instruments XIO2000(A)/XIO2200A PCI Express-to-PCI Bridge (rev 03)
06:00.0 Serial controller: Timedia Technology Co Ltd PCI2S550 (Dual 16550 UART) (rev 01)

In another system there is an 8-port controller that shows:

10:00.0 PCI bridge: PLX Technology, Inc. PEX 8111 PCI Express-to-PCI Bridge (rev 21)
11:00.0 Serial controller: Moxa Technologies Co Ltd CP168EL (8-port RS-232 Smart PCI Express)

thanks
but on RB1100AHx2 no more pci or no pciX

[mkx]

Probably it’s some on-board device, connected to PCI bus. If you’d show whole name/description (possibly from CLI using command /system resource pci print detail) it would be easier to identify devices. I wouldn’t be surprised if it’s about ethernet controllers or something like that.

that’s unknown !!!

So does the command I posted above give any output?

You know, there are some PCI lists on internet, probably more exhaustive than the one built in ROS, but one has to find the full PCI id of “unknown” device. The command I gave you will hopefully provide that information, but I can’t run it for you.