Chapter 1 Getting to Know Your Switch
GS1920v2 Series User’s Guide
27
The following table shows which firmware version supports ZON and Neighbor Management (Smart
Connect) for each Switch. The firmware on each Switch is identified by the firmware trunk version,
followed by a unique model code and release number in brackets. For example, 4.80(ABMK.0) is a
firmware version for GS1920-48HPv2 where 4.80 is the firmware trunk version, ABMK identifies the GS1920-
48HPv2 and .0 is the first release of trunk version 4.80.
1.1.4 PoE
The Switch is a Power Sourcing Equipment (PSE) because it provides a source of power through its
Ethernet ports. Each device that receives power through an Ethernet port is a Powered Device (PD).
The Switch can adjust the power supplied to each PD according to the PoE standard the PD supports.
PoE standards are:
• IEEE 802.3af Power over Ethernet (PoE)
• IEEE 802.3at Power over Ethernet (PoE) +
The following table describes the PoE features of the Switch by PoE standard.
The GS1920-8HPv2, GS1920-24HPv2, and GS1920-48HPv2 come with a Power-over-Ethernet (PoE)
feature. The GS1920-8HPv2, GS1920-24HPv2, and GS1920-48HPv2 support the IEEE 802.3at High Power
over Ethernet (PoE) standard and IEEE 802.3af PoE standard.
Key feature differences between Switch models are as follows. Other features are common to all
models.
Table 4 Models and Firmware Version
SWITCH MODEL FIRMWARE VERSION
GS1920-8HPv2 4.80(ABKZ.0) and later
GS1920-24v2 4.80(ABMH.0) and later
GS1920-24HPv2 4.80(ABMI.0) and later
GS1920-48v2 4.80(ABMJ.0) and later
GS1920-48HPv2 4.80(ABMK.0) and later
Table 5 PoE Standards
PoE FEATURES PoE PoE+
IEEE Standard IEEE 802.3af IEEE 802.3at
PoE Type Type 1 Type 2
Switch Port Power
Maximum Power Per Port 15.4 W 30 W
Port Voltage Range 44 – 57 V 50 – 57 V
Cables
Twisted Pairs Used 2-pair 2-pair
Supported Cables Cat3 or better Cat5 or better
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