ASROCK Z87 Extreme4 User Manual page 18

No. Description
1 ATX 12V Power Connector (ATX12V1)
2 Chassis Fan Connector (CHA_FAN2)
3 CPU Fan Connector (CPU_FAN1)
4 CPU Fan Connector (CPU_FAN2)
5 2 x 240-pin DDR3 DIMM Slots (DDR3_A1, DDR3_B1)
6 2 x 240-pin DDR3 DIMM Slots (DDR3_A2, DDR3_B2)
7 ATX Power Connector (ATXPWR1)
8 USB 3.0 Header (USB3_4_5) (ASMedia Hub)
9 USB 3.0 Header (USB3_6_7) (ASMedia Hub)
10 Vertical Type A USB 3.0 (USB3_12)
11 SATA3 Connectors (SATA3_A0_A1)
12 SATA3 Connectors (SATA3_0_1)
13 SATA3 Connectors (SATA3_2_3)
14 SATA3 Connectors (SATA3_4_5)
15 Chassis Speaker Header (SPEAKER1)
16 BIOS Selection Jumper (BIOS_SEL1)
17 Clear CMOS Jumper (CLRCMOS1)
18 Power Switch (PWRBTN1)
19 Reset Switch (RSTBTN1)
20 Clear CMOS Switch
21 Power LED Header (PLED1)
22 System Panel Header (PANEL1)
23 USB 2.0 Header (USB2_3)
24 USB 2.0 Header (USB4_5)
25 USB 2.0 Header (USB6_7)
26 Chassis Fan Connector (CHA_FAN1)
27 COM Port Header (COM1)
28 Infrared Module Header (IR1)
29 Front Panel Audio Header (HD_AUDIO1)
30 Power Fan Connector (PWR_FAN1)
31 Chassis Fan Connector (CHA_FAN3)
12