Advanced smart managed switching
Minimise wasteful overpowering of devices and help your business save money and time whilst powering more devices with the GS1920 series.
Perfect for SMBs these smart managed switches are rich in L2 features and provide 375Watts over 
Ethernet providing reliant and future-proof networking.
Zyxel's One Network (ZON) provides a free and easy-to-use tool to simplify configuration, management and troubleshooting of the switch allowing you to focus on your business priorities.
Zyxel's networking equipement comes with in-built 'awareness' of other Zyxel units in your network allowing for one-click remote factory resets and power cycling through Zyxel Smart Connect.

Intuitive web-based interface
Would you like access to L2 features such as LACP, advanced QoS, VLAN, ACL and multicast IGMP snooping, without learning complex command-line interface(CLI)? You can with the intuitive web-based interface.

Connect more devices with consumption mode
Maximise your 375W of total budget and connect more power-hungry devices. 'Consumption mode' allows for delivery of only the actual power required for more efficiency and better ROI for your business.

Hear the silence with Smart Fan
Silent and reliable switch operation ideal for the office environment, both desktop and rack mounted. The in-built smart fan is designed to automatically adjust speed based on device temperature. Smart Fan will be available on current models with a Firmware upgrade from January 2018 (v4.5).

Plug into the power of the Zyxel ONE network
Easily maintain your network in one FREE platform with the Zyxel One Network (ZON) tool. Instal, configure and discover switches, WLAN and gateways in your network with one-click. ZON Utility is a free of charge tool which has been downloaded by over 15,000 users to date.

Maximum flexibility for your Gig
Futureproof your network for growth with the The GS1920 series. Ideal for SMB deployments in multiple scenarios, the GS1920 series provides up to 28 Gigabit copper ports for 24-port models, and up to 6 Gigabit fiber ports for 48-port models.
Management features
Multicast support
Yes
ARP inspection
Yes
Switch type
Managed
System event log
Yes
Quality of Service (QoS) support
Yes
MIB support
RFC 1066, RFC 1213, RFC 1157, RFC 1493, RFC 1643, RFC 1757, RFC 2011.2012,2013, RFC 2233, RFC 2358, RFC 2674, RFC 2819,2925, RFC 3621, RFC 4022, RFC 4113, RFC 4292, RFC 4293
Ports & interfaces
Copper ethernet cabling technology
100BASE-TX, 1000BASE-T
Basic switching RJ-45 Ethernet ports quantity
24
Basic switching RJ-45 Ethernet ports type
Gigabit Ethernet (10/100/1000)
Combo SFP ports quantity
4
Fiber optic connector
SFP
Network
IGMP snooping
Yes
Copper ethernet cabling technology
100BASE-TX, 1000BASE-T
Networking standards
IEEE 802.1D, IEEE 802.1Q, IEEE 802.1ab, IEEE 802.1p, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
VLAN support
Yes
Spanning tree protocol
Yes
Rate limiting
Yes
Flow control support
Yes
10G support
No
Virtual LAN features
Private VLAN, Voice VLAN, Protocol-based VLAN, MAC address-based VLAN, Port-based VLAN, IP subnet–based VLAN
Virtual LAN features
VLAN support
Yes
Virtual LAN features
Private VLAN, Voice VLAN, Protocol-based VLAN, MAC address-based VLAN, Port-based VLAN, IP subnet–based VLAN
Optical fiber
Fiber optic connector
SFP
Fiber ethernet cabling technology
1000BASE-X
Performance
Packet buffer memory
1.5 MB
Mean time between failures (MTBF)
911301 h
Internal memory
256 MB
Flash memory
32 MB
Harmonized System (HS) code
85176990
Technical details
Product colour
Black
Mean time between failures (MTBF)
911301 h
Rack mounting
Yes
Data transmission
Packet buffer memory
1.5 MB
MAC address table
16000 entries
Switching capacity
56 Gbit/s
Forwarding rate
42 Mpps
Security
IP-MAC-Port binding
Yes
Authentication
Guest VLAN, Port-based authentication
Security algorithms
802.1x RADIUS, SNMP, SNMPv3
MAC address filtering
Yes
IGMP snooping
Yes
Access Control List (ACL)
Yes
Queue scheduling algorithms
SPQ, WFQ, Weighted Round Robin (WRR)
Password protection
Yes
CPU defense
Yes
Authentication type
IEEE 802.1x, RADIUS
DHCP features
DHCP snooping, DHCP relay, DHCPv6 relay, DHCP client
Multicast features
Multicast support
Yes
Certificates
Safety
LVD, BSMI
Electromagnetic compatibility
FCC 15 A, CE A, BSMI EMC
Certification
RoHS
Memory
Packet buffer memory
1.5 MB
Internal memory
256 MB
Flash memory
32 MB
Design
Safety
LVD, BSMI
Product colour
Black
LED indicators
Yes
Electromagnetic compatibility
FCC 15 A, CE A, BSMI EMC
Certification
RoHS
Rack mounting
Yes
Indication
LED indicators
Yes
Power
Power consumption (max)
22.5 W
AC input voltage
100 - 240 V
AC input frequency
50 - 60 Hz
Power over Ethernet (PoE)
Power over Ethernet (PoE)
No
Operational conditions
Storage temperature (T-T)
-40 - 70 °C
Storage relative humidity (H-H)
10 - 95%
Operating temperature (T-T)
0 - 50 °C
Operating relative humidity (H-H)
10 - 95%
Heat dissipation
76.73 BTU/h
Weight & dimensions
Width
441 mm
Depth
131 mm
Height
44 mm
Weight
2.1 kg
Packaging data
Rack mount kit
Yes