NETGEAR ProSafe GS748T User Manual

Page 10 of 20
SFP GBIC Module
The four module bays accommodate standard SFP GBIC modules, such as the AGM731F or AGM732F from NETGEAR, allowing you to have fiber
connections on your network. The module bays are combo ports, sharing a connection with the last four RJ-45 ports, port 45T, 46T, 47T, and 48T.
Being a combo port, only one type of connection can be active at any given time. For example, both port 45T and 45F cannot be used at the same
time. If both connectors are plugged in at the same time, the fiber port (45F) will be active.
The SFP GBIC bay accommodates a standard SFP GBIC module, which has an LC connector that is compatible with the IEEE 802.3Z 1000 Base-
SX Standard.
LED Descriptions
The front panel of the NETGEAR GS748T Gigabit Smart Switch has LEDs that provide a quick and accurate display of link, port speed, and activity.
Table 2-1 summarizes the LEDs on the switch.
Table 2-1. Front Panel LEDs
Label Color Activity Description
Power Green On
Off
Power is supplied to the switch.
Power is disconnected.
Link/ACT Green On
Blinking
Off
Port has a valid link connection.
Data transmission is occurring on the port.
No 10/100/1000Mbps link is established on the port
Speed Green
Yellow
On
On
Off
A valid 1000Mbps link is established on the port
A valid 100Mbps link is established on the port
A valid 10Mbps link is established on the port
SFP (MiniGBIC) Link/Act Green On
Off
A valid 1000Mbps link is established on the port
No 1000Mbps link is established on the port
Reset Button
The GS748T has a Reset Button to trigger a hardware reset of the switch. This is equivalent to turning the power off and back on. The last saved
configuration will be loaded onto the switch as it resets. To press the Reset Button, insert a small device such as a paper clip into the opening to
press the recessed button. The LEDs on the switch should go out and then come back on as the switch goes through its Power On Self Test
(POST).
Figure 2-3. Reset Button of the GS748T Gigabit Smart Switch

NETGEAR ProSafe GS748T Specifications

Interface

RJ-45 connectors	48
SFP GBIC module bays	4
Auto Uplink	Yes

Performance Specifications

Bandwidth	40 Gbps
Network latency	Less than 20 microseconds
Buffer memory	1, 632 KB

Power Supply

Power consumption	70 W maximum
Input voltage	100-240VAC
Frequency	50-60 Hz

Physical Specifications

Dimensions (H x W x D)	1.7 x 17.3 x 10.1 in
Weight	8.8 lbs
Weight (kg)	4.0 kg

Environmental Specifications

Operating temperature	0 to 40°C
Storage temperature	-20 to 70°C
Operating humidity	90% maximum relative humidity