Power Supply; Cd-Rom; Hard Disk; Keyboard And Mouse - RadiSys PROCELERANT CE915GM Quick Start Manual

2
Preparing Components and Accessories

Power supply

The COM Express module will work with an ATX-compliant power supply or a power supply that
is compliant with PICMG COM.0 COM Express Specification Revision 1.0. When selecting a
power supply, be sure to consider the maximum power, AC input, frequency, input current, and
DC out specifications of the power supply.
Theoretically, COM Express modules require at least 8A on the +12V power rail. Considering
the power consumption of the carrier board, though, it is best to allow a certain amount of
leeway on the two power rails. For this reason, the power supply should be rated above 200
Watts with at least 12A output on the +12V power rail.
A typical power supply for the CR100 Flex ATX carrier board may have these specifications:

CD-ROM

A USB CD-ROM or IDE CD-ROM drive is usually required for you to install the operating system
and other software.

Hard disk

Standard computer IDE and SATA hard disks (60GB, 80GB, 120GB, etc.) can be attached to the
CR100 carrier board. The CR100 carrier board contains one IDE header and two SATA headers.

Keyboard and mouse

The CR100 carrier board supports a standard USB keyboard and USB mouse. The CR100 does
not support the use of a PS/2 keyboard or mouse.
12
Type: ATX
Max Power: 350W
AC input: 100–120V AC, 200–240V AC
Frequency: 50/60Hz
Input current: 10 A @ 115 V, 6 A @ 230 V
DC output:
Voltage +3.3V +5V
Current 14A 30A
It is recommended that you use an ATX P4 power supply with a 24-pin cable, which is typically
labeled "BTX." A 20-pin cable can also be used, in which case you would plug the 20-pin cable in on
the pin #1 end of the carrier board's ATX power supply connector and leave the two pairs of pins on
the other end exposed. No adapter is required.
When multiple fans are used, additional amperage is required. For example, if a 4U chassis with two
fans has 2A surge current for each fan, 16A is required (12A + 2A + 2A).
+12V -5V -12V
15A 0.5A 0.8A
Note
+5V Standby with 12V power supply
3.0A