Cisco Systems 4900M manual Switching Components, Physical Characteristics, AC Power, DC Power

Appendix A Specifications

Catalyst 4900M Switch Specifications

Table A-3	Catalyst 4900 Series Switch Specifications (continued)
Item		Specification
Altitude		–60 to 2000 m
operating and nonoperating
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 VAC
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
		Cisco Catalyst 4900M Switch Installation Guide
78-18350-01			A-3