NETGEAR GS748T User Manual

50
GS748T Smart Switch
To access this page, click System  Management  Green Ethernet Configuration.
To configure the Green Ethernet features:
1. Enable or disable the Auto Power
Down Mode.
• Enable.
When the port link is down, the PHY will automatically go down for a short
period of time and then wake up to check link pulses. This allows the port to continue
to perform auto-negotiation while consuming less power when no link partner is
present.
• Disable.
Provide full power to the port even if no link partner is present.
2. Enable or disable th
e Short Cable Mode.
• Enable.
The switch performs a cable test when the port link is up. If the cable that
connects the port to its link partner has a length less than 10m, PHYs are placed in
low-power mode (nominal power).
• Disable.
Do not perform an automatic cable test on a linked port or adjust the port
power based on the cable length.
3. Enable or disable th
e Energy Efficient Ethernet (EEE) Mode.
• Enable.
Allow ports to enter a low-power mode to reduce power consumption during
periods of low link utilization. EEE is defined by IEEE 802.3az. EEE enables both the
send and receive sides of the link to disable some functionality for power savings
when the link is lightly loaded.
• Disable.
Provide full power to the port even during periods of low link utilization.
4. Click Apply
to send the updated configuration to the switch. Configuration changes take
effect immediately.

NETGEAR GS748T Specifications

General

Basic switching RJ-45 Ethernet ports quantity	48
MAC address table	16000 entries
Packet buffer memory	1.632 MB
Maximum data transfer rate	1 Gbit/s
Latency	20 µs
I/O ports	48 RJ-45 connectors for 10BASE-T, 100BASE-TX, and 1000BASE-T (Auto Uplink on all ports) 4 SFP slots for fiber Gigabit Ethernet modules
Dimensions (WxDxH)	440 x 260 x 43 mm
Power requirements	100-240VAC 50/60 Hz
Networking features	10BASE-T, 100BASE-TX, 1000BASE-T
Connectivity technology	Wired
Full duplex	Yes
Networking standards	IEEE 802.3x
Minimum system requirements	Category 5 network cables Network card for each PC Network software (e.g., Windows)
Mean time between failures (MTBF)	69930 h
Safety	UL listed (UL 1950)/cUL, IEC950/EN60950
LED indicators	Link, Power
Power consumption (typical)	70 W
Storage temperature (T-T)	-10 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 90 %

Weight and Dimensions

Weight	4000 g