Network Protocol and Standards Compatibility

• IEEE 802.3 10BASE-T Ethernet
• IEEE 802.3u 100BASE-TX Fast Ethernet
• IEEE 802.3ab 1000BASE-T Gigabit Ethernet
• IEEE 802.3x full-duplex flow control

Interfaces

• 48 RJ-45 connectors for 10BASE-T, 100BASE-TX, and 1000BASE-T (Auto Uplink on all ports)
• 4 shared SFP slots for fiber Gigabit Ethernet modules

Administrative Switch Management

• IEEE 802.1Q Tag VLAN (up to 128 static VLAN groups)
• Port-based VLAN (up to 48 groups)
• IEEE 802.1p (Class of Service)
• Port-based QoS (options high/normal)
• DSCP Layer QoS
• Port trunking – Manual as per IEEE802.3ad link aggregation
• DHCP client function
• Rapid Spanning Tree – 802.1w
• IGMP snooping V1
• SNMP V1/V2c
• Port setting
• Web-based configuration, anywhere on the network
• Smart Wizard Discovery Utility program auto discovers devices (up to 254 agents/switches); set system configuration to each agent
• Configuration backup/restore (easy to configure more than one switch)
• Password access control and restricted IP access list
• Firmware upgradeable

Active Flow Control

• Half-duplex back-pressure control
• Full-duplex IEEE 802.3x pause frame flow control
• Rate limiting
• Trusted MAC access control

Performance Specifications

• Forwarding modes: Store-and-forward
• Bandwidth: 96 Gbps
• Network latency: Less than 20 μs for 64-byte frames in store-and-forward mode for100 Mbps to 100 Mbps transmission
• Jumbo frame support
• Buffer memory: 4Mb embedded memory per unit
• Address database size: 8,000 media access control (MAC) addresses per system
• Addressing: 48-bit MAC address
• Mean time between failure (MTBF): 108,000 hours (~12 years)
• Acoustic noise: 52 dBA

LEDs

• Unit: Power
• Per port: Link, activity, speed

Power Supply

• Power consumption: 66W maximum
• 100-240V AC/50-60 Hz universal input

Physical Specifications

• Dimensions (H x W x D): 440 x 305 x 43mm (17.3 x 12.0 x 1.7in)
• Weight: 4.9 kg/10.8 lb

Environmental Specifications

• Operating temperature: 0° to 50°C (32° to 122°F)
• Storage temperature: -10° to 70°C(14° to 158°F)
• Operating humidity: 90% maximum relative humidity, non-condensing
• Storage humidity: 95% maximum relative humidity, non-condensing
• Operating altitude: 3,000 m (10,000 ft) maximum
• Storage altitude: 3,000 m (10,000 ft) maximum

Electromagnetic Compliance

• CE mark, commercial
• FCC Part 15 Class A
• VCCI Class A
• EN 55022 (CISPR 22), Class A
• EN 50082-1
• EN 55024
• C-Tick

Safety Agency Approvals

• UL listed (UL 1950)/cUL
• IEC 950/EN 60950

Warranty

• NETGEAR Lifetime Warranty†

Package Contents

• 48-port Gigabit Smart Switch (GS748T)
• Rubber footpads
• Power cord
• Rack-mount kit
• Smart Switch resource CD
• Smart Switch installation guide
• Warranty/support information card

Modules

• ProSafe AGM731F 1000BASE-SX SFP GBIC
• ProSafe AGM732F 1000BASE-LX SFP GBIC
• ProSafe AGM733 1000BASE-ZX SFP GBIC

Ordering Information

• North America: GS748TNA
• Europe: GS748TEU
• Asia: GS748TAU

ProSupport Information

OnCall 24x7, Category 2

• PMB0332

XPressHW, Category 2

• PRR0332-100