A-3
Cisco Catalyst 4900M Switch Installation Guide
78-18350-01
Appendix A Specifications
Catalyst 4900M Switch Specifications
Altitude
operating and nonoperating
–60 to 2000 m
Switch heat dissipation
723 BTU/hour
Switching Components
Memory 512-MB SDRAM, 128-MB Flash (onboard and fixed),
256
bytes serial EEROM
Physical Characteristics
Dimensions (H x W x D) 3.5 x 17.2 x 17.9 in. (8.9 x 43.7 x 45.5 cm)
Weight 34.0 lb (15.4 kg) for a system with two power supplies,
4.5 lb (2.1 kg) per power supply
Airflow Left to right
AC Power
Power supply output 960 W
System power dissipation 240 W
AC-input 12 A maximum @ 100 VAC
5 A maximum @ 240 VA C
AC frequency 50 to 60 Hz
Output current 80 A maximum
Inrush value 50 A for one cycle of AC
Output voltage 12 V
Input KVA rating 1.200 KVA
DC Power
Power supply output 960 W
System power dissipation 320 W
DC-input 27 A @ –48 VDC (Operating range –40.5 to –56 VDC)
21.6 A @ –60 VDC (Operating range –55 to –72 VDC)
Output current 80 A maximum
Inrush value Hot turn on (PSU on for > 1 hour) 75 A
Table A-3 Catalyst 4900 Series Switch Specifications (continued)
Item Specification
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