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AS-C74 User’s Manual

Connector Reference 13

2.2 <Jumper Reference>

Jumper Function

JRTC CMOS Operating/Clear Setting

JP1 COM1 signal mode switch (For Pin-1 & Pin-9)

JP2 COM2 signal mode switch (For Pin-1 & Pin-9)

JAT Power mode select

JCSEL1

JCSEL2

CN_COM2 RS-232 RS422 RS485 Setting

CN_IR IrDA Setting

JVUSB1/2

USB Voltage Setting

Jumper: JAT

Type: Onboard 3-pin jumper

Jumper: JVUSB1/2

Type: Onboard 6-pin jumper

JAT Mode

1-2 AT Power mode

2-3 ATX Power mode

Default setting

JVUSB Mode

1-3 & 2-4 5V

3-5 & 4-6 5V_SB

Default: 1-3 & 2-4

JAT

JVUSB1

JVUSB2

1 2

5 6

1 2

5 6

5 1

6 2

JAT

1

3

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 50 51

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