ASROCK SBC-330M User Manual page 9

1 : 2-Pin Buzzer Header
2 : Clear CMOS Header
3 : mSATA Select
4 : 4-Pin CPU FAN Connector (+12V)
5 : USB2.0 Headers (USB2_5_6, USB2_7_8)
6 : Backlight Power Select (LCD_BLT_VCC) (BKT_PWR1)
7 : Panel Power Selection (LCD_VCC) (PNL_PWR1)
8 : BL1, BL2
9 : Backlight Control Level (BLT_PWM1)
10 : SATA3 Connectors (SATA3_1, SATA3_2)
11 : SATA Power Output Connector
12 : System Panel Header
13 : ATX/AT Mode Select (PWR_JP1)
14 : ATX Power Connector (Input 9V-36V)
15 : Inverter Power Control Wafer (BLT_PWR1)
16 : LPC Header
17 : COM Port Header (COM4)
18 : COM Port Header (COM3)
19 : COM Port Pin9 PWR Setting Jumpers
PWR_COM1 (For COM Port1)
PWR_COM2 (For COM Port2)
PWR_COM3 (For COM Port3)
PWR_COM4 (For COM Port4)
20 : COM Port Header (COM2)
21 : Backlight & Amp Volume Control (BLT_VOL1)
22 : COM Port Header (COM1)
23 : GPIO Default Setting (JGPIO_SET1)
24 : Digital Input / Output Power Select (JGPIO_PWR1)
25 : Digital Input / Output Pin Header (JGPIO1)
26 : 3W Audio AMP Output Wafer
27 : Front Panel Audio Header
28 : Chassis Intrusion Headers (CI1, CI2)
29 : LVDS Panel Connector
9