User`s guide

Chapter 1: Chassis Description

Note: Integration of the 5.25-inch peripheral bay can affect EMC compliance and is a

regulated activity.

Caution: To avoid damage to a 5.25-inch peripheral device, ensure the EMI gasketing

provided in the lower bay does not bridge or short any open circuits of the exposed

peripheral device. If the 5.25-inch device has open circuits, install it in one of the two

upper bays.

Power Supplies

The chassis comes conﬁgured with three 400-watt power supplies, each designed to

minimizeEMIandRFI.Eachsupplyauto-senseswithinthefollowingvoltagerangesand

is rated as follows:

• 100-120 V∼ at 50/60 Hertz (Hz); 7.6 A maximum

• 200-240 V∼ at 50/60 Hz; 3.8 A maximum

The DC output voltages of each power supply are:

• +3.3V at 36 A max

• +5V at 24 A max (total combined output of +3.3 V and +5.5 V not to exceed 195 W)

• +12V at 18.0 A with 19.0 A <10ms peak

• +24V at 50mA

• -12V at 0.5 A

• +5V standby 1.5 A

Power is sourced through the power cable to the 20-pin main connectors on the

baseboard.Remotesensingsignalsareprovidedthroughthecabletothe 14-pinauxiliary

connector on the baseboard.