ASRock Z77 OC Formula manual Motherboard Layout

Motherboard Layout

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1	ATX 12V Power Connector (ATX12V2)	26	Intel Z77 Chipset
2	ATX 12V Power Connector (ATX12V1)	27	Power Switch (PWRBTN)
3	1155-Pin CPU Socket	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 240-pin DDR3 DIMM Slots	31	USB 2.0 Header (USB4_5, Black)
	(DDR3_A1, DDR3_B1, Black)	32	BIOS Selection Jumper (BIOS_SEL1)
7	2 x 240-pin DDR3 DIMM Slots	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	V-ProbeTM(VOL_CON1, VOL_CON2)	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	Twin-Power Cooling
25	System Panel Header (PANEL1, Black)

ASRock Z77 OC Formula Motherboard