![](/images/new-backgrounds/1214792/21479227x1.webp)
1.3 Motherboard Layout
1 | ATX 12V Power Connector (ATX12V2) | 26 | Intel Z77 Chipset |
2 | ATX 12V Power Connector (ATX12V1) | 27 | Power Switch (PWRBTN) |
3 | 28 | Reset Switch (RSTBTN) | |
4 | CPU Fan Connector (CPU_FAN1) | 29 | 64Mb SPI Flash Memory (Backup BIOS) |
5 | CPU Fan Connector (CPU_FAN2) | 30 | 64Mb SPI Flash Memory (Main BIOS) |
6 | 2 x | 31 | USB 2.0 Header (USB4_5, Black) |
| (DDR3_A1, DDR3_B1, Black) | 32 | BIOS Selection Jumper (BIOS_SEL1) |
7 | 2 x | 33 | Chassis Fan Connector (CHA_FAN2) |
| (DDR3_A2, DDR3_B2, Yellow) | 34 | USB 2.0 Header (USB6_7, Black) |
8 | Dr. Debug | 35 | USB 2.0 Header (USB8_9, Black) |
9 | PCIe ON/OFF Switch | 36 | Consumer Infrared Module Header (CIR1, Gray) |
10 | Rapid OC Button | 37 | Chassis Fan Connector (CHA_FAN1) |
11 | Rapid OC Button (+) | 38 | Infrared Module Header (IR1) |
12 | Post Status Checker (PSC) | 39 | SLI / XFIRE Power Connector (SLI/XFIRE_PWR1) |
13 | 40 | COM Port Header (COM1) | |
14 | ATX Power Connector (ATXPWR1) | 41 | Front Panel Audio Header (HD_AUDIO1, Black) |
15 | USB 3.0 Header (USB3_6_7, Black) | 42 | HDMI_SPDIF Header (HDMI_SPDIF1, Black) |
16 | Power Fan Connector (PWR_FAN1) | 43 | PCI Express 2.0 x16 Slot (PCIE5, Yellow) |
17 | Chassis Fan Connector (CHA_FAN3) | 44 | PCI Express 3.0 x16 Slot (PCIE4, Yellow) |
18 | SATA2 Connectors (SATA2_4_5, Black) | 45 | PCI Express 2.0 x1 Slot (PCIE3, Black) |
19 | SATA2 Connectors (SATA2_2_3, Black) | 46 | Clear CMOS Jumper (CLRCMOS1) |
20 | SATA3 Connectors (SATA3_0_1, Yellow) | 47 | PCI Express 3.0 x16 Slot (PCIE2, Black) |
21 | SATA3 Connectors (SATA3_M0_M1, Yellow) | 48 | PCI Express 2.0 x1 Slot (PCIE1, Black) |
22 | SATA3 Connectors (SATA3_M2_M3, Yellow) | 49 | Chassis Fan Connector (CHA_FAN4) |
23 | Chassis Speaker Header (SPEAKER1, Black) | 50 | MOS Fan Connector (MOS_FAN1) |
24 | Power LED Header (PLED1, Black) | 51 | |
25 | System Panel Header (PANEL1, Black) |
|
|
14