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.

Ports & interfaces
Basic switching RJ-45 Ethernet ports quantity	44
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Combo SFP ports quantity	4
SFP module slots quantity	2
Fiber optic connector	SFP
Weight & dimensions
Width	441 mm
Depth	270 mm
Height	44 mm
Weight	4.1 kg
Power
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	474.3 W
Operational conditions
Operating temperature (T-T)	0 - 50 °C
Storage temperature (T-T)	-40 - 70 °C
Operating relative humidity (H-H)	10 - 95%
Storage relative humidity (H-H)	10 - 95%
Heat dissipation	1617.36 BTU/h
Network
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
10G support	No
Copper ethernet cabling technology	100BASE-TX, 1000BASE-T
Flow control support	Yes
Rate limiting	Yes
Spanning tree protocol	Yes
VLAN support	Yes
Virtual LAN features	Private VLAN, Voice VLAN, Protocol-based VLAN, MAC address-based VLAN, Port-based VLAN, IP subnet–based VLAN
Data transmission
MAC address table	16000 entries
Switching capacity	100 Gbit/s
Forwarding rate	74 Mpps
Packet buffer memory	1.5 MB
Packaging data
Cables included	AC
Rack mount kit	Yes
Package width	616 mm
Package depth	355 mm
Package height	107 mm
Package weight	5.25 kg
Security
DHCP features	DHCP snooping, DHCP relay, DHCPv6 relay, DHCP client
Access Control List (ACL)	Yes
IGMP snooping	Yes
Security algorithms	802.1x RADIUS, SNMP, SNMPv3
MAC address filtering	Yes
IP-MAC-Port binding	Yes
Authentication	Guest VLAN, Port-based authentication
Password protection	Yes
Authentication type	IEEE 802.1x, RADIUS
CPU defense	Yes
Queue scheduling algorithms	SPQ, WFQ, Weighted Round Robin (WRR)
Management features
Switch type	Managed
Quality of Service (QoS) support	Yes
ARP inspection	Yes
System event log	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
Optical fiber
Fiber ethernet cabling technology	1000BASE-X
Design
Rack mounting	No
Product colour	Black
Safety	LVD, BSMI
Electromagnetic compatibility	FCC 15 A, CE A, BSMI EMC
Certification	RoHS
Power over Ethernet (PoE)
Power over Ethernet (PoE)	Yes
Power over Ethernet (PoE) ports quantity	48
Total Power over Ethernet (PoE) budget	375 W
Performance
Internal memory	256 MB
Flash memory	32 MB
Noise level	26.5 dB
Mean time between failures (MTBF)	502509 h
Logistics data
Harmonized System (HS) code	85176990
Multicast features
Multicast support	Yes