3Com 2900 manual

				Description
		3Com	3Com	3Com	3Com	3Com
Item		Baseline	Baseline	Baseline	Baseline	Baseline
		Switch	Switch	Switch	Switch	Switch
		2920-SFP	2928-SFP	2952-SFP	2928-PWR	2928-HPWR
		Plus	Plus	Plus	Plus	Plus
	AC	Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz
		Maximum voltage range: 90 VAC to 264 VAC, 47 Hz or 63 Hz
Inp						Use the
						external RPS
ut
						unit provided
volt	RP
						by 3Com only,
ag
	S	—				with the rated
e
	DC					voltage
						ranging from
						–52 VDC to
						–55 VDC
Supported		—				RPS1000-A3
RPS unit
Power						AC: 45.6W
consumpti		11.9W	13.4W	25.7W	25.0W
						DC: 27.5W
on
						AC power
						input: 523 W
						(158 W for
						system power
					255 W (85 W	consumption
Power						and 365 W for
					for system
						PoE power
consumpti					power
						consumption)
on (full		22.4 W	31.5 W	55.4 W	consumption
						DC power
configurati					and 170 W for
						input: 832 W
on)					PoE power
						(92 W for
					consumption)
						system power
						consumption
						and 740 W for
						PoE power
						consumption)
Operating
temperatu		0°C to 45°C (32°F to 113°F)
re
Operating
humidity		10% to 90%
(nonconde
nsing)

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