![ASRock Industrial SBC-350 User Manual Download Page 9](http://html1.mh-extra.com/html/asrock-industrial/sbc-350/sbc-350_user-manual_2988067009.webp)
9
1 : Front Panel Audio Header
2 : 3W Audio AMP Output Wafer
3 : Buzzer
4 : Panel Power Select (LCD_VCC) (PNL_PWR1)
5 : BL1
6 : LVDS Panel Connector
7 : Inverter Power Control Wafer (BLT_PWR1)
8 : Backlight Power Select (LCD_BLT_VCC) (BKT_PWR1)
9 : BL2
10 : Backlight & Amp Volume Control (BLT_VOL1)
11 : 4-Pin CPU FAN Connector (+12V)
12 : Battery Connector
13 : SATA3 Connector (SATA3_1)
14 : M.2 Key-M Socket (M2M_1)
15 : SATA Power Output Connector
16 : GPIO Default Setting (JGPIO_SET1)
17 : Digital Input / Output Power Select (JGPIO_PWR1)
18 : Digital Input / Output Pin Header (JGPIO1)
19 : COM Port Header (COM1)
20 : USB3.0 Connector (USB3_5_6)
21 : LPC Header
22 : Chassis Intrusion Headers (CI1, CI2)
23 : COM Port Pin9 PWR Setting Jumper (PWR_COM3 (For COM Port3))
24 : COM Port Pin9 PWR Setting Jumper (PWR_COM4 (For COM Port4))
25 : COM Port Headers (COM2, 3, 4)
26 : USB2.0 Connector (USB2_5_6)
27 : System Panel Header
28 : COM Port Pin9 PWR Setting Jumper (PWR_COM2 (For COM Port2))
29 : COM Port Pin9 PWR Setting Jumper (PWR_COM1 (For COM Port1))
30 : SIO_AT1
31 : Clear CMOS Header (CLRMOS1)
32 : ATX/AT Mode Select (PWR_JP1)
33 : ATX Power Connector (Input 9V-36V)
34 : M.2 Key-E Socket (M2E_1)
35 : M.2 Key-M Socket (M2M_2)