Chapter 2 – Hardware Information373.5” Subcompact Board GENE-BSW5Pin Pin Name Signal Type Signal Level1 DCD IN2 DSR IN3 RX IN4 RTS OUT ± 9V5 TX OUT ± 9V6 CTS IN7 DTR OUT ± 9V8 RI IN9 GND GND2.5.18 BIOS Debug Port (CN18)Pin Pin Name Signal Type Signal Level1 SPI_SO OUT2 GND GND3 SPI_CLK IN4 +3.3VSB PWR +3.3V5 SPI_SI IN6 SPI_CS# IN7 NC2.5.19 USB 2.0 Port 3 (CN19)