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2.5
Connectors
Signals go to other parts of the system through connectors. Loose or improper connection
might cause problems, Make sure all connectors are properly and firmly connected. Here is a
summary table showing the connectors on the hardware.
Connector
CN1
CN2
CN3
CN4
CN5
CN6
CN8, CN9
CN11
CN14
PCIe1 ~ PCIe4
PCI1
PCIe5
CN15
CN16, CN17, CN20
CN21
CN23
CN24
CN25
CN26
CN27
CN28
ATX2
COM1
COM2 ~ COM6
FAN1
FAN2, FAN3
PCI1 ~ PCI4
SATA1 ~ SATA4
Board and Pin Assignments
IMB520R / 521R LGA1151 ATX Motherboard
Description
PS/2 KB/MS Connector
DP/HDMI Connector
DVI-D/ VGA Connector
Audio Jack
RJ45 + USB3.1 GEN1 Connector
RJ45 (iAMT)+ USB3.1 GEN2 Connector
Internal PS/2 KB/MS Connector
Front Audio Header
PCI-Express x16 Slots
PCI-Express x4 Slots
PCI Slots
PCI-Express x1 Slots
External Sensor Connector
Internal USB2.0 Headers
Internal USB3.1 GEN1 Connector
TPM 2.0 Connector (Optional)
Front Panel Header
DIO Connector
24-pin Power Input Connector
Voltage Monitor Header
SMBus Header
CPU Power Input Connector
Comport Connector
Comport Box Header
CPU Fan Connector
System Fan Connectors
PCI Slots
SATA III Connector
11
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