COMMELL AS-C74 - Manual (Page 13)

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