ASROCK B450M/ac R2.0 User Manual page 14

No. Description
1 ATX 12V Power Connector (ATX12V1)
2 CPU Fan Connector (CPU_FAN1)
3 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
4 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
5 AMD Fan LED Header (AMD_FAN_LED1)
6 ATX Power Connector (ATXPWR1)
7 USB 3.2 Gen1 Header (USB3_5_6)
8 AMD LED Fan USB Header (USB_7)
9 SATA3 Connector (SATA3_3)(Upper)
10 SATA3 Connector (SATA3_4)(Lower)
11 SATA3 Connector (SATA3_2)(Lower)
12 SATA3 Connector (SATA3_1)(Upper)
13 System Panel Header (PANEL1)
14 Power LED and Speaker Header (SPK_PLED1)
15 Chassis Intrusion Header (CI1)
16 Chassis Fan Connector (CHA_FAN2)
17 USB 2.0 Header (USB_3_4)
18 USB 2.0 Header (USB_5_6)
19 Clear CMOS Jumper (CLRCMOS1)
20 RGB LED Header (RGB_HEADER1)
21 Addressable LED Header (ADDR_LED1)
22 Front Panel Audio Header (HD_AUDIO1)
23 Chassis/Water Pump Fan Connector (CHA_FAN1)
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