Hitachi Compute Blade 2000 User Manual page 1904

 I/O slot expansion unit specifications
I/O module
Number of expanded slots
Server chassis connect port
Power supply module
Cooling fan module
Outside dimension（W x D x H: mm）
EIA standard unit
Mass: Maximum
Power supply
Environment
Item
Input voltage:
frequency
Max rated voltage
Temperature (°C)
Humidity (%)
21
Specification
2 as standard
16 as standard
per I/O module:
PCI Express 2.0 (x8) x 4 slots
PCI Express 2.0 (x4) x 4 slots
4 as standards: 2 per I/O module
2 as standards: 1 + 1 redundancy
4 as standards:
2 per I/O module; 1 + 1 redundancy
449 x 759 x 174
4 U
About 48 kg
AC 200 V to 240 V single-phase (50/60 Hz)
1 kW
5 to 35°C
20 to 80%; No condensation is allowed.