COMe-bV26 - Rev. 1.0, User Guide
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Kontron recommends only using a DP-to-HDMI or DP-to-DVI passive adapter that is
complaint to the DP Dual-Mode standard. If adapters are used with FET level shifter for DCC
translation, display detection issues may occur.
To increase link margin, at 4K resolution a DP redriver on the carrier is recommended
2.3.6.
AUDIO
The COMe-bV26 supports default processor audio and an external HD Audio codec on the carrier board.
2.3.7.
PCI Express
The COMe-bV26 features up to four PCIe Gen3 lanes [0-3] and up to four PCIe Gen 2 lanes [4-7] using a PCIe switch
connected to one of the processor’s PCIe lanes.
The following table lists the supported standard PCI Express Gen 3 lane configurations.
COMe
Connector
GPP Lane #
Supported Lane Configuration
4x1
2x2
1x4
PCIE_0
4
x1
x2
x4
PCIE_1
5
x1
PCIE_2
6
x1
x2
PCIE_3
7
x1
The following table lists the supported PCI Express switch Gen 2 lane configurations.
COMe
Connector
PCIe Switch
Lane #
Supported Lane Configuration
4x1
PCIE_4
4
x1
PCIE_5
5
x1
PCIE_6
6
x1
PCIE_7
7
x1
To change the default PCIe configuration (8 x1), a new BIOS version is required. For BIOS version information, see
Kontron’s Customer Section or contact Kontron Support.
For the COMe-bV26 option without the PCIe Switch, LAN is directly connected to processor
PCIe, see Figure 3: Block Diagram COMe-bV26.