Supermicro X7DWA-N User Manual download pdf (Page 18)

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X7DWA-N User's Manual

Wake-On-LAN (WOL)

Wake-On-LAN is deﬁ ned as the ability of a management application to remotely

power up a computer that is powered off. Remote PC setup, up-dates and asset

tracking can occur after hours and on weekends so that daily LAN trafﬁ c is kept

to a minimum and users are not interrupted. The motherboard has a 3-pin header

(WOL) to connect to the 3-pin header on a Network Interface Card (NIC) that has

WOL capability. In addition, an onboard LAN controller can also support WOL

without any connection to the WOL header. The 3-pin WOL header is to be used

with a LAN add-on card only.

Note: Wake-On-LAN requires an ATX 2.01 (or above) compliant power supply.

1-6 Power Supply

As with all computer products, a stable power source is necessary for proper and

reliable operation. It is even more important for processors that have high CPU

clock rates.

The X7DWA-N can only accommodate 24-pin ATX power supplies. Although

most power supplies generally meet the speciﬁ cations required by the CPU, some

are inadequate. You should use one that will supply at least 500W of power. In

addition, the 12V 4-pin power and the 12V 8-pin are also required for adequate

power supply to the system. Also your power supply must supply 1.5A for the

Ethernet ports.

It is strongly recommended that you use a high quality power supply that meets

ATX power supply Speciﬁ cation 2.01 or above. It must also be SSI compliant

(Refer to the web site at http://www.ssiforum.org/ for more information). Addition-

ally, in areas where noisy power transmission is present, you may choose to install

a line ﬁ lter to shield the computer from noise. It is recommended that you also

install a power surge protector to help avoid problems caused by power surges.

1-7 Super I/O

The disk drive adapter functions of the Super I/O chip include a ﬂ oppy disk drive

controller that is compatible with industry standard 82077/765, a data separator,

write pre-compensation circuitry, decode logic, data rate selection, a clock genera-

tor, drive interface control logic and interrupt and DMA logic. The wide range of

functions integrated onto the Super I/O greatly reduces the number of components

required for interfacing with ﬂ oppy disk drives. The Super I/O supports 360 K, 720

K, 1.2 M, 1.44 M or 2.88 M disk drives and data transfer rates of 250 Kb/s, 500

Kb/s or 1 Mb/s. It also provides two high-speed, 16550 compatible serial com-

munication ports (UARTs). Each UART includes a 16-byte send/receive FIFO.

Both UARTs provide legacy speed with baud rate of up to 115.2 Kbps as well as

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Supermicro X7DWA-N User Manual Page 18