Model Name: LGS552   
Network Standards:
IEEE 802.3
IEEE 802.3u
IEEE 802.3ab
IEEE 802.3z
IEEE 802.3ae
IEEE 802.3x
IEEE 802.3ad
IEEE 802.3az
IEEE 802.1D
IEEE 802.1w
IEEE 802.1Q/p
IEEE 802.1X
Memory:
128 MB
LEDs:
System (blue/yellow), Link/Act(green)
System Power Consumption without PoE+:
110V: 19.4W
220V: 19.71W
Forwarding Rate:
104.16 Mbps
Switching Capacity:
140 Gbps
MAC Address Table Size:
16K
Jumbo Frame (FE, GE):
9K
Dimensions (LxWxH):
440 x 350 x 44.45 mm (17.32 x 13.78 x 1.75 in.)
Weight:
4.18 kg (9.22 lbs.)
Power Input:
100–240V;
50–60 Hz
(1.4A max)
Operating Temperature:
0 to 50°C (32 to 122°F)
Storage Temperature:
-20 to 70°C (-4 to 158°F)
Operating Humidity:
10 to 90% RH
Storage Humidity:
10 to 90% RH (non-condensing)
Spanning Tree:
IEEE 802.1d Spanning Tree, IEEE 802.1w Rapid Spanning Tree
Link Aggregation:
IEEE 802.3ad LACP, up to 4 groups with up to 8 ports per group
VLAN:
Port-based and IEEE 802.1Q tag-based VLANs

Auto Voice VLAN:  
VLAN voice traffic is automatically assigned by OUI to a voice-specific
VLAN and treated with appropriate levels
IGMP Snooping:
IGMP (v1/v2/v3) snooping provides for fast client joins and leaves
of multicast streams and limits bandwidth-intensive video traffic
to only the requesters; supports 256 multicast groups
HOL Blocking Prevention:
Head-of-line (HOL) blocking prevention
Port Mirroring:
Traffic on multiple ports can be mirrored to another port for
analysis with a network analyzer
Security Features:
IEEE 802.1X radius authentication
DHCP snooping
IP-MAC-Port binding
IP source guard
ARP inspection
STP root guard
STP BPDU guard
DHCP relay
Port security supports limited dynamic lock and locked MAC address,
Management access control
Storm Control:
Broadcast, unknown-unicast, and multicast
Access Control:
Support up to 512 rules for enhanced security and/or advanced
QoS policy: allow, deny, or rate limit based on Layer1 to 4 protocolfields

at packet header level with MAC ACL and IP ACL
RMON:
Embedded remote monitoring (RMON) software agent support
for enhanced traffic management, monitoring, and analysis
Management Interface:
HTTP
HTTPS
Other Management:
Telnet (menu-driven), DHCP client, system log, configuration
unload and backup via HTTP or TFTP, PING, dual images, SNTP
SNMP:
Version 1
Version 2c
QoS - Class of Service:
Port-based, IEEE 802.1p priority-based, IPv4/v6 IP DSCP-based
Combo Ports (RJ45 + SFP):
2 combo on ports g49, g50
Copper FE/GE Ports (RJ45):
g01–g25, g26–g50
Green Power Mode:
EEE+, Short Reach + Energy Detect
QoS - Priority Levels:
4 hardware queues
QoS - Scheduling:
Priority queuing and weighted round robin (WRR)
10Gb Ports (SFP+):
XG1, XG2
Total System Ports:
52GE