Supermicro 1012C-MRF Manual do Utilizador descarregar pdf (Página 51)

Chapter 4: System Safety

5-19

I2C to PCI-Express Slot

C1/JI

C2 allows you to enable the I

C bus

to communicate with the PCI-Express slot.

For the jumpers to work properly, please set

both jumpers to the same setting. If enabled,

both jumpers must be enabled. If disabled,

both jumpers must be disabled. See the table

on the right for jumper settings.

C to PCI-Express Slot

Jumper Settings

(JI

C1/JI

C2)

Jumper Setting Deﬁ nition

Closed Enabled

Open Disabled

Onboard Speaker Enable/Disable

The JD1 header allows you to use either an

external speaker or the internal (onboard)

speaker. To use the internal onboard speaker,

close pins 6 and 7 with a jumper. To use an

external speaker, remove the jumper and

connect the speaker wires to pins 4 (+5V)

and 7 (control signal). See the table on the

right for settings and the table associated with

the Power LED/Keylock/Speaker connection

(previous section) for jumper settings.

Onboard Speaker Enable/Disable

Pin Deﬁ nitions (JD1)

Pins Deﬁ nition

6 and 7 Jump for onboard speaker

4 and 7 Attach external speaker wires

Note: Pins 4-7 are used only for the

onboard speaker.

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Supermicro 1012C-MRF Manual do Utilizador Página 51