24 Ethernet 10/100/1,000 ports, 4 of which are dual-purpose 10/100/1,000 or SFP

P series: 4 Gig SFP

X series: 4 x 10 Gig SFP+

48 Ethernet 10/100/1,000 ports



P series: 4 Gig SFP

X series: 4 x 10 Gig SFP+

24 Ethernet 10/100/1,000 ports


P series: 4 Gig SFP
    
X series: 4 x 10 Gig SFP+

48 Ethernet 10/100/1,000 ports
                       

P series: 4 Gig SFP           

X series: 4 x 10 Gig SFP+

IEEE 802.1d compliance
16K MAC address entries
MAC address learning and aging
Static, dynamic, and black hole MAC address entries
Packet filtering based on source MAC addresses

4K VLANs
Guest VLAN and voice VLAN
GVRP
MUX VLAN
VLAN assignment based on MAC addresses, protocols, IP subnets, policies, and ports
1:1 and N:1 VLAN Mapping

RRPP ring topology and RRPP multi-instance
Smart Link tree topology and Smart Link multi-instance, providing the millisecond-level protection switchover
SEP
ERPS (G.8032)
STP (IEEE 802.1d), RSTP (IEEE 802.1w), and MSTP (IEEE 802.1s)
BPDU protection, root protection, and loop protection

Neighbor Discovery (ND)
Path MTU (PMTU)
IPv6 ping, IPv6 tracert, and IPv6 Telnet
ACLs based on the source IPv6 address, destination IPv6 address, Layer 4 ports, or protocol type
MLD v1/v2 snooping
6to4 tunnel, ISATAP tunnel, and manually configured tunnel

PIM DM, PIM SM, PIM SSM
IGMP v1/v2/v3 snooping and IGMP fast leave
Multicast forwarding in a VLAN and multicast replication between VLANs
Multicast load balancing among member ports of a trunk
Controllable multicast
Port-based multicast traffic statistics

Rate limiting on packets sent and received by an interface
Packet redirection
Port-based traffic policing and two-rate three-color CAR
Eight queues on each port
WRR, DRR, SP, WRR + SP, and DRR + SP queue scheduling algorithms
Re-marking of the 802.1p priority and DSCP priority
Packet filtering at Layer 2 to Layer 4, filtering out invalid frames based on the source
MAC address, destination MAC address, source IP address, destination IP address,
TCP/UDP port number, protocol type, and VLAN ID
Rate limiting in each queue and traffic shaping on ports

User privilege management and password protection
DoS attack defense, ARP attack defense, and ICMP attack defense
Binding of the IP address, MAC address, interface, and VLAN
Port isolation, port security, and sticky MAC
Blackhole MAC address entries
MAC Forced Forwarding (MFF)
Limit on the number of learned MAC addresses
802.1x authentication and limit on the number of users on an interface
AAA authentication, RADIUS authentication, HWTACACS+ authentication, and NAC
SSH v2.0
Hypertext Transfer Protocol Secure (HTTPS)
CPU defense
Blacklist and whitelist
802.1x authentication, MAC address authentication, and combined authentication on a per port basis
Portal authentication on a per VLANIF interface basis 
MACSec (hardware ready)

Working as an SVF client that is plug-and-play with zero configuration
Automatically loading the system software package and patches of clients
One-click and automatic delivery of service configurations
Supports independent running client

iStack
Virtual cable test
SNMP v1/v2c/v3
RMON
Web-based NMS
System logs and alarms of different levels
sFlow

Operating temperature:

Zero to 1,800m altitude: 0°C to 45°C
1,800m to 5,000m altitude: Operating temperature reduces by 1°C for every 220m increase in altitude

Relative humidity: 5% to 95% (non-condensing)

AC:

Rated voltage range: 100V to 240V, 50/60 Hz
Maximum voltage range: 90V to 264V, 50/60 Hz

DC:

Rated voltage range: –48V to –60V
Maximum voltage range: –36V to –72V

Dimensions (W x D x H)

S5720-52X-PWR-SI-ACF: 442 mm x 507 mm x 43.6 mm

Others: 442 mm x 420 mm x 43.6 mm

S5720-28P-SI-AC: 21.2W

S5720-28X-SI-AC (DC): 22.3W

S5720-28X-PWR-SI-AC (DC):

without PD: 31.8W;

with PD: < 913W (PoE: 740W)

S5720-52P-SI-AC: 32.2W

S5720-52X-SI-AC (DC): 33.8W

S5720-52X-PWR-SI-AC (DC):

without PD: 51W; with PD: < 943.2W (PoE: 740W)

S5720-52X-PWR-SI-ACF:

without PD: 57W;  with PD: < 1,631.5W (PoE: 1,440W)

S5720S-28P-SI-AC: 20.2W

S5720S-28X-SI-AC (DC): 22W

S5720S-52P-SI-AC: 33W

S5720S-52X-SI-AC (DC): 34.4W