EMX0 PCIe Gen3 I/O expansion drawer (feature code EMX0)
Hardware specications provide detailed information for your expansion unit, including dimensions,
electrical, power, temperature, environment, and service clearances.
Table 25. Dimensions for rack-mounted expansion unit
Width Depth Height Weight (maximum)
482 mm (19 in.) 802 mm (31.6 in.)
173 mm (6.8 in.), 4 EIA
units
54.4 kg (120 lb)
Table 26. Electrical
1,2,3
Electrical characteristics Properties
AC rated voltage and frequency 100 - 127 V ac or 200 - 240 V ac at 50 or 60 Hz plus or
minus 3 Hz (FC EMXA)
DC rated voltage 192 - 400 V dc (FC EMXB)
Thermal output (maximum) 1740 BTU/hr
Maximum power consumption 510 W
Maximum kVA 0.520
Phase Single
Notes:
1. The power supplies for AC or DC voltage do not change. Only the power chunnel is different. The power
chunnel uses internal cables to carry power from the rear of the system node to the power supplies that are
in the front of the system node.
2. All measurements made in conformance with ISO 7779 and declared in conformance with ISO 9296.
3. AC and HVDC power supplies cannot be mixed in the same server or I/O drawer. IBM recommends that AC
products and HVDC products with HVDC PDUs are installed in separate racks. However, AC and HVDC
products can be supported in the same rack if all grounding (earthing) is done in accordance with the
applicable electrical code or codes. IBM provides documentation for different AC and HVDC products about
the disconnecting means for service. If a different disconnecting means is to be used for service of the
equipment in a rack with AC-powered and DC-powered products, the disconnecting means must be made
clear to service.
Table 27. Environment requirements
Environment Recommended operating Allowable operating Nonoperating
ASHRAE class A3
Airflow direction Front-to-back
Temperature
1
18°C - 27°C (64°F - 80°F) 5°C - 40°C (41°F - 104°F) 1°C - 60°C (34°F - 140°F)
Humidity range 5.5°C (42°F) dew point
(DP) to 60% relative
humidity (RH) and 15°C
(59°F) dew point
-12.0°C (10.4°F) DP and
8% - 80% RH
5% - 80% RH
Maximum dew point 24°C (75°F) 27°C (80°F)
Maximum operating
altitude
3050 m (10000 ft)
20 Power Systems: Site and hardware planning
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