The DS77U Series can be used with up to three displays simultaneously. Due to the design of the Intel chipset, please be aware of the following restrictions when setting up your monitor.
Note: In a 3-display setup, the DP output will show no picture while booting in BIOS mode. It will be activated once the OS has loaded the display driver.
For safety reasons, please ensure that the power cord is disconnected before opening the case.
This mainboard does only support 1.2 V DDR4 SO-DIMM memory modules.
Please press the “Del” key while booting to enter BIOS. Here, please load the optimised BIOS settings.
COM1 (RS232) | |||
---|---|---|---|
Pin | Signal Name | Pin | Signal Name |
1 | DCD | 2 | RX |
3 | TX | 4 | DTR |
5 | GND | 6 | DSR |
7 | RTS | 8 | CTS |
9 | RI1- | ||
COM1 (RS422) | |||
Pin | Signal Name | Pin | Signal Name |
1 | TXD- | 2 | TXD+ |
3 | RXD- | 4 | RXD+ |
5 | GND | 6 | - |
7 | - | 8 | - |
9 | - | ||
COM1 (RS485) | |||
Pin | Signal Name | Pin | Signal Name |
1 | Data- | 2 | Data+ |
3 | - | 4 | - |
5 | GND | 6 | - |
7 | -8 | - | |
9 | - |
COM PORT Pin 9 “Ring Indicator” (RI) configuration
JP1 | |||
---|---|---|---|
COM1 (pin 9) | COM2 (pin 9) | ||
Short Pin | Function | Short Pin | Function |
1-2 (Default) | RI1 | 3-4 (Default) | RI2 |
5-7 | +5V | 6-8 | +5V |
7-9 | +12V | 8-10 | +12V |
JP9 | |
---|---|
Pin | AC Back auto Power ON function |
Short 1-2 | Disable (Default) |
Open | Enable |
SW2 | |
---|---|
Pin | Signal Name |
1 | PWRSW |
2 | +5V |
3 | GND |
4 | RTC_RST# |
Please make sure to use either the supplied feet or the VESA mount.