Gigabyte GA-P55A-UD6 User Manual

- 23 - Hardware Installation
1-9 Onboard LEDs and Buttons
ACPI LEDs
The 4 embedded ACPI LEDs indicate the system power status (S0, S1, S3, S4, S5) to prevent potential hard-
ware damage due to improper plug/unplug actions.
ACPI LEDs:
S3_LED
S0_LED
S4_S5_LED
S1_LED
CPU VTT/Memory Phase Indicator LEDs
This motherboard contains 4 phase indicator LEDs controlled by the system BIOS to indicate the phase sta-
tus of the CPU VTT and memory. The green LEDs light up under normal working conditions; the yellow LEDs
will be illuminated when an excessive overvoltage or overloading occurs.
V_P_LED (CPU VTT):
GD1: Normal working conditions (green LED)
GD2: Excessive overvoltage or overloading (yellow LED)
M_P_LED (Memory):
MD1: Normal working conditions (green LED)
MD2: Excessive overvoltage or overloading (yellow LED)

Gigabyte GA-P55A-UD6 Specifications

General

Memory voltage	1.5 V
Number of memory slots	6
Maximum internal memory	16 GB
Processor socket	LGA 1156 (Socket H)
Processor manufacturer	Intel
USB 2.0 connectors	2
Power fan connector	Yes
Number of SATA connectors	8
AGP x8 slots	0
Special features	@BIOS Q-Flash Xpress BIOS Rescue Download Center Xpress Install Xpress Recovery2
Controller interface type	iTE IT8720
Controller 2nd interface type	ATA-133/100/66/33
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Audio chip	Realtek ALC889
Motherboard chipset	Intel® P55
Audio output channels	7.1 channels
Motherboard form factor	ATX
Compatible operating systems	Win XP, Vista, 7
PCI Express x16 slots	3
RAID levels	0, 1, 10
Bundled software	Norton Internet Security
Networking features	10/100/1000 Mbit
BIOS memory size	32 Mbit

Weight and Dimensions

Depth	244 mm
Width	305 mm