ASRock B450 Steel Legend User Manual - Page 14
x 288-pin DDR4 DIMM Slots DDR4_A2, DDR4_B2
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No. Description 1 ATX 12V Power Connector (ATX12V1) 2 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1) 3 AMD Fan LED Header (AMD_FAN_LED1) 4 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2) 5 CPU/Water Pump Fan Connector (CPU_FAN2/WP) 6 CPU Fan Connector (CPU_FAN1) 7 ATX Power Connector (ATXPWR1) 8 USB 3.1 Gen1 Header (USB3_5_6) 9 SATA3 Connector (SATA3_1) 10 SATA3 Connector (SATA3_2) 11 SATA3 Connector (SATA3_A1) 12 SATA3 Connector (SATA3_A2) 13 SATA3 Connector (SATA3_3) 14 SATA3 Connector (SATA3_4) 15 System Panel Header (PANEL1) 16 Power LED and Speaker Header (SPK_PLED1) 17 Chassis/Water Pump Fan Connector (CHA_FAN3/WP) 18 Chassis/Water Pump Fan Connector (CHA_FAN2/WP) 19 Clear CMOS Jumper (CLRCMOS2) 20 Addressable LED Header (ADDR_LED1) 21 USB 2.0 Header (USB_3_4) 22 USB 2.0 Header (USB_1_2) 23 COM Port Header (COM1) 24 RGB LED Header (RGB_LED1) 25 TPM Header (TPMS1) 26 Front Panel Audio Header (HD_AUDIO1) 27 Chassis/Water Pump Fan Connector (CHA_FAN1/WP) 8 English