No. Description
1
2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
2
2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)
3
ATX 12V Power Connector (ATX12V1)
4
CPU Fan Connector (CPU_FAN1)
5
2 x 288-pin DDR4 DIMM Slots (DDR4_D2, DDR4_C2)
6
CPU Fan Connector (CPU_FAN2)
7
2 x 288-pin DDR4 DIMM Slots (DDR4_D1, DDR4_C1)
8
Vertical Type A USB 2.0 (USB7)
9
ATX Power Connector (ATXPWR1)
10
USB 3.0 Header (USB3_7_8)
11
USB 3.0 Header (USB3_5_6)
12
Chassis Fan Connector (CHA_FAN3)
13
SATA3 Connectors (SSATA3_0_1)
14
SATA3 Connectors (SSATA3_2_3)
15
SATA3 Connectors (SATA3_0_3)
16
SATA3 Connectors (SATA3_1_4)
17
SATA3 Connectors (SATA3_2_5)
18
Power LED Header (PLED1)
19
Chassis Speaker Header (SPEAKER1)
20
System Panel Header (PANEL1)
21
Power Switch (PWRBTN1)
22
HDD Saver Connector (SATA_PWR_1)
23
Reset Switch (RSTBTN1)
24
Chassis Fan Connector (CHA_FAN2)
25
Chassis Fan Connector (CHA_FAN1)
26
USB 2.0 Header (USB3_4)
27
USB 2.0 Header (USB5_6)
28
BIOS Selection Switch (BIOS_SEL1)
29
Clear CMOS Jumper (CLRCMOS1)
30
COM Port Header (COM1)
31
Thunderbolt AIC Connector (TBT1)
32
TPM Header (TPMS1)
33
Front Panel Audio Header (HD_AUDIO1)
34
PCIe Power Connector (PCIE_PWR1)
35
Power Fan Connector (PWR_FAN1)
X99 Extreme6/ac / X99 Extreme6
3