Compaq 383900-B21 | Redundant Power Supply for 5400 Switch

Technical specifications:
- Input voltage: 100-240 VAC
- Input frequency: 50/60 Hz
- Output voltage: 12 VDC
- Output power capacity: 875 W
- Efficiency: 85%
- Form factor: Plug-in module
- Cooling system: Fan
- Dimensions (WxDxH): 3.3 in x 10.6 in x 1.6 in
- Weight: 2.2 lbs
- Compatibility: Compaq 5400R series switches
- Hot-swappable: Yes
- Redundant: Yes

Helpful notes:
- Provides backup power in case of primary power supply failure
- Hot-swappable feature allows for replacement without shutting down the switch
- Can be used in a redundant configuration for added reliability.