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7748

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LEDs indicate the status of the switch and each port. For more information about these indicators, see LEDs.
Ethernet ports can connect the switch to network-ready devices. These ports can operate in half-duplex mode for 10/100Mbps and full-duplex mode for 10/100/1000Mbps.
Each mini-GBIC port can connect the switch to an optical networking device or another USRobotics smart switch. When you use a mini-GBIC port, the corresponding Ethernet port is disabled.
Reset button returns settings to their factory defaults.
Power connector supports input voltages in the range 100–240V AC at 50–60Hz.

LEDs

LED	State		Condition
POWER	On		Receiving power
	Off		Not receiving power
SYSTEM	Blinking		CPU is working
	Blinking		CPU is not working
	Off
1–48 (Ethernet)	Green	Solid or blinking	Link rate is 1000 Mbps
		Blinking	Port is transmitting or receiving data
	Amber	Solid or blinking	Link rate is 10 Mbps or 100 Mbps
		Blinking	Port is transmitting or receiving data
	Off		Link is down
45–48 (mini-GBIC)	On		Mini-GBIC module is installed and connected
	Blinking		Port is transmitting or receiving data
	Off		No mini-GBIC module is installed

Specifications

General

Complies with IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3z
Supports IEEE 802.3x flow control for full-duplex mode ports and back-pressure flow control for half-duplex mode ports
Supports 802.1p QoS traffic prioritization
Embedded 1024KB RAM for packet buffering
Supports jumbo frames (maximum 9220 bytes)
Integrated address look-up engine, supports 8K absolute MAC addresses
Auto MDI/MDIX

Performance

Packet Filtering/Forwarding Rate:

10Mbps Ethernet: 14,880 pps
100Mbps Fast Ethernet: 148,800 pps
1000Mbps Gigabit Ethernet: 1,488,000 pps

Management

Web based configuration of key functionality, including:

802.1Q VLAN
Quality of Service (QoS)
Port Mirroring
Port-based Trunking
Port configuration setting: speed, duplex mode, and device flow control

Physical

48 auto-sensing 10/100/1000 Mbps RJ-45 Ethernet ports
4 1000 Mbps auto-sensing mini-GBIC ports
Visual Diagnostic LEDs: Power, System, Ethernet Ports, and mini-GBIC Ports
Standard 1U, 19” rack-mount case design
100–240VAC 50/60Hz, internal universal switching power supply

Environmental

Operating Temperature: 0 to 40°C/Storage Temperature: -10 to 70°C
Operating Humidity: 10% to 90% RH/ Storage Humidity: 5% to 90% RH

Package Contents

USRobotics
Rack mount brackets and screws
Power cable
Quick Installation Guide
Documentation and Utility CD-ROM

Product Dimensions

17.3 x 12.2 x 1.75 inches (44 x 31 x 4.4 cm)

Power Consumption

79 watts (maximum)

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