ASROCK B75M R2.0 User Manual page 35

User manual
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ATX 12V Power Connector
(4-pin ATX12V1)
(see p.13, No. 2)
Serial port Header
(9-pin COM1)
(see p.13, No. 25)
Chassis Intrusion Header
(2-pin CI1)
(see p.13, No. 27)
Please connect an ATX 12V
power supply to this connector.
This COM1 header supports a
serial port module.
This motherboard supports
CASE OPEN detection feature
1
GND
that detects if the chassis cover
Signal
has been removed. This feature
requires a chassis with chassis
intrusion detection design.
35

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