IEI Integration NANO-9452 v4.01 - Manual (Page 72)

NANO-9452 EPIC Motherboard
Page 54
Figure 4-21: COM3 and COM4 Connector Pinout Locations
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 Data Carrier Direct (DCD) 2 Data Set Ready (DSR)
3 Receive Data (RXD) 4 Request To Send (RTS)
5 Transmit Data (TXD) 6 Clear To Send (CTS)
7 Data Terminal Ready (DTR) 8 Ring Indicator (RI)
9 Ground (GND) 10 NC
Table 4-21: COM3 and COM4
4.2.20 SPI Flash Connector
Jumper Label: JSPI1
Jumper Type: 8-pin header
Jumper Settings: See Table 4-22
Jumper Location: See Figure 4-22
The 8-pin SPI Flash connector is used to flash the BIOS.
Pin No. Description Pin No. Description
1 SPI_VCC 2 GND