3Com manual Switch 4250T 3C17302, Physical Dimensions, Environmental Requirements, Safety, Snmp

Switch 4250T (3C17302) 73

Switch 4250T (3C17302)

Physical Dimensions	Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
	Weight: 2.83 kg (6.23 lbs)
Environmental Requirements
Operating Temperature	0 ° to 40 °C (32 ° to 104 °F)
Storage Temperature	–40 ° to +70 °C (-40 ° to 158 °F)
Operating Humidity	10–95% relative humidity, non-condensing
Standards	EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
	Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications	UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950
EMC
Emissions	CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
	ICES-003 Class A, AS/NZS 3548 Class A, VCCI Class A, CNS 13438 Class A,
	EN61000-3-2, EN61000-3-3
Immunity	EN 55024
Heat Dissipation	60 watts maximum (205 Btu/h maximum)
Power Supply
AC Line Frequency	50/60 Hz
Input Voltage	90–240 VAC
Current Rating	2.3 A (amps)(maximum)
Standards Supported	SNMP	Terminal Emulation
	SNMP protocol (RFC 1157)	Telnet (RFC 854)
	MIB-II (RFC 1213)	Protocols Used for Administration
	Bridge MIB (RFC 1493)	UDP (RFC 768)
	RMON MIB II (RFC 2021)	IP (RFC 791)
	Remote Monitoring MIB (RFC	ICMP (RFC 792)
	1757)	TCP (RFC 793)

MAU MIB (RFC 2239)	ARP (RFC 826)
	TFTP (RFC 783)
	DHCP (RFC 2131, RFC 2132, RFC 1534)
	BOOTP (RFC 951, RFC 1497)