ASROCK X299 OC Formula, Manual

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No. Description
1 2 x 288-pin DDR4 DIMM Slots (DDR4_B1, DDR4_A1)
2 8 pin 12V Power Connector (ATX12V1)
3 4 pin 12V Power Connector (ATX12V2)
4 PCIe ON/OFF Switch (SWITCH1)
5 2 x 288-pin DDR4 DIMM Slots (DDR4_C1, DDR4_D1)
6 Rapid OC Button (+) (PLUS)
7 CPU Fan / Waterpump Fan Connector (CPU_OPT/W_PUMP)
8 CPU Fan Connector (CPU_FAN1)
9 Post Status Checker (PSC)
10 RGB LED Header (RGB_LED2)
11 Rapid OC Button (–) (MINUS)
12 Power Button (PWRBTN1)
13 Menu Button (MENU)
14 Reset Button (RSTBTN1)
15 Retry Button (RTY_BTN1)
16 Safe Boot Button (BFG_BTN1)
17 Slow Mode Switch (SLOWMODE)
18 LN2 Mode Switch (LN2MODE)
19 Virtual RAID On CPU Header (VROC1)
20 ATX Power Connector (ATXPWR1)
21 USB 3.1 Gen1 Header (USB3_5_6)
22 Graphics 12V Power Connector (GFX_12V1)
23 SATA3 Connectors (SATA3_A1_A2)
24 Front Panel Type C USB 3.1 Gen2 Header (F_USB31_TC_1)
25 SATA3 Connectors (SATA3_0_1)
26 SATA3 Connectors (SATA3_2_3)
27 SATA3 Connectors (SATA3_4_5)
28 Chassis Fan Connector (CHA_FAN1)
29 System Panel Header (PANEL1)
30 Chassis Fan / Waterpump Fan Connector (CHA_FAN3/W_PUMP)
31 Power LED and Speaker Header (SPK_PLED1)
32 BIOS B Select Jumper (F_BIOS_B1)
33 USB 2.0 Header (USB3_4)