The S3900-24T4S-R is an L2+ managed stackable switch designed for SMBs, enterprises, midmarket, and branch office networks, offering a lower total cost of ownership. It features 24x 10/100/1000M RJ45 ports and 4x 10Gb SFP+ uplinks, delivering a switching capacity of 128 Gbps and a forwarding rate of 96 Mpps. Its dual redundant power supplies ensure uninterrupted power, even in case of failure, while the fanless design guarantees silent operation.
The switch supports stacking technology, which simplifies operations by interconnecting up to 8 switches that can be managed as a single logical device. It supports advanced features such as OSPF, Voice VLAN, robust QoS, Static Routing, and IPv6. Additionally, it offers simple device and network management through a Command-Line Interface (CLI) and an intuitive on-box web UI.
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Product Highlights
24-Port Gigabit Ethernet L2+ Switch, 24x Gigabit RJ45, with 4x 10Gb SFP+ Uplinks, Stackable Switch, Fanless
Software Spotlights
Redundant, built-in power supplies
Up to 8 units stacking
IEEE 802.3ad Link Aggregation (LACP)
Graceful protocol restart (OSPF)
Virtual router redundancy protocol (VRRP)
Rapid link detection protocol (RLDP)
Rapid Ethernet uplink protection protocol (REUP)
Bidirectional forwarding detection (BFD)
Ethernet Ring Protection Switching (ERPS)
The spanning tree protocols (STPs)
IEEE 802.1x, RADIUS, TACACS+, Local Authentication
Port Security, IP+MAC+port binding
Port-based Authentication
Mac-based Authentication HTTPS and SSL (v3)
DHCP Snooping
IP Source Guard (IPSG)
DoS Protection
SNMP V1/V2/V3, HTTP, log
Remote monitoring (RMON)
Syslog, Web-based management, Telnet, SSH
Command-Line Interface (CLI)
LLDP (802.1ab)
Network Monitoring through Sampled Flow (sFlow)
LACP can control the bundling of several physical ports together to form a single logical channel, boosting bandwidth and network reliability without altering the infrastructure.
Voice VLAN improves voice traffic transmission priority and guarantees voice quality by assigning voice traffic to a dedicated VLAN without competing with other traffic.
Dimensions (HxWxD) | 1.73''x17.32''x7.09'' (44x440x180mm) | 1.73''x17.32''x8.27'' (44x440x210mm) | 1.72''x17.32''x9.69'' (43.6x440x246.1mm) | 1.75''x17.44''x10.24'' (44.5x443x260mm) |
Weight | 8.76 lbs (3.975kg) | 4.41 lbs (2kg) | 8.75 lbs (3.97kg) | 6.72 lbs (3.05kg) |
Ports | 24x 10/100/1000BASE-T RJ45 4x 10G SFP+ | 24x 10/100/1000BASE-T 4x 1G SFP | 24x 10/100/1000BASE-T RJ45 4x 1G/10G SFP+ | 24x 10/100/1000BASE-T 4x 1G SFP |
Switch Chip | Realtek RTL9301 | Realtek RTL8382M | Broadcom BCM56150 | Broadcom BCM56152 |
Switching Capacity | 128 Gbps | 56 Gbps | 128 Gbps | 56 Gbps |
Forwarding Rate | 96 Mpps | 42 Mpps | 96 Mpps | 42 Mpps |
Power Supplies | 2 (1+1 Redundancy) Built-in, AC | 1 Built-in, AC | 2 (1+1 Redundancy) Hot-swappable, AC | 1 Built-in, AC |
Fans | Fanless | Fanless | 1 Built-in, Right-to-Left | Fanless |
Max. Power Consumption | 25W | 15W | 27W | 24W |
Stacking | 8 (Between S3900-24T4S-R & S3900-24F4S-R) | — | 4 (same model) | 4 (same model) |
Voice VLAN | Yes | Yes | — | — |
4x 10G SFP+
4x 1G SFP
4x 1G/10G SFP+
4x 1G SFP
Yes
Yes