ARK-3383 User Manual 243.5 COM 4 RS-232/422/486 BIOS settingThe COM 4 port connector located on rear face plate of ARK-3383 unitcan be configured to operate in RS-232, RS-422 or RS-485 mode byadjusting “COM 4 Mode” of “Integrated Peripherals” at the BIOS setting.Please refer to Chapter 4 “Award BIOS Setup” to select. The default set-ting value of COM4 has been set for RS-232.3.6 LCD Power Jumper Setting (J6)The ARK-3383 series of embedded box computers provide a jumper-JP6located on internal PCM-9380 or PCM-9386 motherboard for selectingthe LCD signal power of 5 V or 3.3 V. When you connect your LVDSLCD Panel display, you need to set up JP6 for the LCD power settingselection. for your display.Please also refer to Chapter 8 “Full Disassembly Procedure” to set up.The default setting of J6 is 5 V.3.7 Installing the DDR SDRAM Memory ModuleThe ARK-3383 provides one 200-pin SODIMM (Small Outline DualInline Memory Module) socket and supports 2.5 V DDR SDRAM. Youcan install from 64 MB to 1 GB of DDR SDRAM memory. The proce-dure for installing a DDR SDRAM SODIMM into the ARK-3383 isdetailed below, please follow these steps carefully.• Remove the power cord.• Unscrew the four screws from the bottom cover of ARK-3383.• Remove the bottom cover.• Plug a DDR SDRAM SODIMM into the onboard SODIMMsocket.• Replace the bottom cover with the four screws.Table 3.2: LCD Power Setting (J6)Close pins Function1-2 +5V*2-3 +3.3V(*): means default setting of the jumper/function
