ASROCK B550 STEEL LEGEND User Manual page 15

No. Description
1 ATX 12V Power Connector (ATX12V1)
2 ATX 12V Power Connector (ATX12V2)
3 CPU Fan Connector (CPU_FAN1)
4 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
5 CPU/Water Pump Fan Connector (CPU_FAN2/WP_3A)
6 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
7 RGB LED Header (RGB_LED2)
8 Addressable LED Header (ADDR_LED2)
9 Chassis/Water Pump Fan Connector (CHA_FAN5/WP)
10 ATX Power Connector (ATXPWR1)
11 Front Panel Type C USB 3.2 Gen1 Header (USB31_TC_2)
12 USB 3.2 Gen1 Header (USB3_3_4)
13 Chassis/Water Pump Fan Connector (CHA_FAN4/WP)
14 SATA3 Connector (SATA3_2)
15 SATA3 Connector (SATA3_1)
16 SATA3 Connector (SATA3_3)
17 SATA3 Connector (SATA3_5)
18 SATA3 Connector (SATA3_6)
19 SATA3 Connector (SATA3_4)
20 Clear CMOS Jumper (CLRCMOS1)
21 System Panel Header (PANEL1)
22 Power LED and Speaker Header (SPK_PLED1)
23 USB 2.0 Header (USB_7_8)
24 USB 2.0 Header (USB_5_6)
25 Chassis/Water Pump Fan Connector (CHA_FAN2/WP)
26 Chassis/Water Pump Fan Connector (CHA_FAN3/WP)
27 RGB LED Header (RGB_LED1)
28 Addressable LED Header (ADDR_LED1)
29 Front Panel Audio Header (HD_AUDIO1)
30 SPI TPM Header (SPI_TPM_J1)
31 Chassis/Water Pump Fan Connector (CHA_FAN1/WP)
B550 Steel Legend
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