ASROCK H170 Pro4 Manual page 4

No. Description
1 ATX 12V Power Connector (ATX12V1)
2 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
3 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
4 ATX Power Connector (ATXPWR1)
5 USB 3.0 Header (USB3_7_8)
6 SATA3 Connector (SATA3_0)
7 SATA3 Connector (SATA3_1)
8 CPU Fan Connector (CPU_FAN1)
9 SATA3 Connector (SATA3_5)
10 SATA3 Connector (SATA3_4)
11 SATA3 Connector (SATA3_2)
12 System Panel Header (PANEL1)
13 SATA3 Connector (SATA3_3)
14 Power LED and Speaker Header (SPK_PLED1)
15 SATA Express Connector (SATA_EXP0)
16 Chassis Fan Connector (CHA_FAN2)
17 Chassis Fan Connector (CHA_FAN1)
18 USB 2.0 Header (USB_3_4)
19 USB 2.0 Header (USB_1_2)
20 Chassis Intrusion Header (CI1)
21 TPM Header (TPMS1)
22 COM Port Header (COM1)
23 Front Panel Audio Header (HD_AUDIO1)
24 Clear CMOS Jumper (CLRMOS1)
25 Chassis Fan Connector (CHA_FAN3)
26 PCIe Power Connector (PCIE_PWR1)
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