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SG350-28SFP
Cisco SG350-28SFP 350 24-Port Gigabit SFP Switch, 4x1G Uplin...
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SG350-28SFP is a managed Layer 2+ fiber switch with 24 Gigabit SFP access slots and four fixed Gigabit uplink positions, comprising two dedicated SFP ports and two copper/SFP combo ports. The Rack-Mount 1U chassis belongs to the Cisco 350 Series Managed Switches family and serves small-business networks with fiber-facing connections to switches and other network devices. The discontinued SG350-28P instead provides PoE+ on 24 copper access ports; this model supplies no endpoint power. Each combo interface permits either copper or fiber operation, with only one medium active at a time.
SG350-28SFP price for new stock is is available on request. Get immediate quote. SG350-28SFP refurb price is $1,253.70.
Request bulk order quote for SG350-28SFP for additional pricing. Browse the full Cisco 350 Series Managed Switches series or explore all Cisco products.
56 Gbps switching capacity and 41.66 Mpps forwarding establish the switching fabric and packet-processing throughput. 990 IPv4 static routes support communication between network segments; PBR selects next hops using IPv4 or IPv6 access rules. SG350-28SFP has 512 MB of DRAM for runtime operations and 256 MB of flash for software and configuration storage. A dynamically shared 1.5 MB packet buffer serves the ports, while the MAC table accommodates 16000 addresses. STP, RSTP and MSTP provide spanning-tree options, and LACP supports eight aggregation groups with eight active ports per group. Browser administration, Textview CLI and SNMP provide configuration and monitoring paths. The 28-port Gigabit managed SFP switch operates from an internal AC supply accepting 100-240V AC. 34.3W worst-case consumption at 220V provides the electrical load for power planning. One fan provides active cooling, and the 0°C to 50°C operating range bounds installation temperature.
ORM Systems offers SG350-28SFP new sealed or certified refurbished; refurbished units are inspected and bench-tested for power-on and POST, rated-speed links on every port, optics bay recognition, PSU status, fan status and clean boot, with firmware verified and the configuration wiped to factory default. Specify condition, the regional power cord and order quantity on the PO. New units have up to 3-year extended ORM warranty coverage, certified refurbished units have up to 1 year, and every condition includes 30-day returns with terms applying; Cisco's separate limited lifetime hardware warranty is bounded by the last support date, July 31, 2027. POs are accepted, government buyers receive Net-30 terms, and enterprise or volume orders can specify regional stock and RMA handling across the UK, EU, US and MEA, including advance replacement.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24 x 1G SFP; four 1G uplinks, two combo |
Max Power Draw | 34.3W at 220V |
Cooling | 1 fan |
Replaces | SG300-28SFP-K9-AU / SG300-28SFP-K9-EU / SG300-28SFP-K9-NA / SG300-28SFP-K9-UK; end-of-sale October 4, 2018 |
Lifecycle Status | End of sale July 30, 2022; support ends July 31, 2027 |
Replacement PID | CBS350-24S-4G-NA discontinued; no current successor |
In a 150-user law firm, the SG350-28SFP-24 10/100/1000 switch deploys dedicated VLANs for attorneys, paralegals and guest Wi-Fi, while two Gigabit copper/SFP combo and two SFP uplinks connect to the data center firewall. This setup isolates sensitive case files, enforces role-based access control and minimizes broadcast domains. Outcome: enhanced network security, simplified compliance and deterministically low latency between client workstations and file servers.
A university IT team uses the SG350-28SFP-24 to aggregate classroom and research lab traffic, leveraging its two dedicated SFP ports and two copper/SFP combos for redundant fiber rings between buildings. Rapid Spanning Tree Protocol (RSTP) ensures sub-second failover during fiber cuts. Outcome: uninterrupted gigabit connectivity across campus, optimized bandwidth utilization and streamlined network management through the web-based GUI.
An SMB data center integrates the SG350-28SFP-24 at the top-of-rack to connect eight ESXi hosts and shared storage arrays using 10/100/1000 copper ports. Dual SFP uplinks tie into a core switch cluster for server-to-server east-west traffic. Quality of Service (QoS) prioritizes VM replication and VoIP. Outcome: consistently high throughput, sub-millisecond latency for virtualization workloads and centralized traffic analytics for capacity planning.
When replacing an SG300-28SFP-K9-NA in an established installation, use its designated replacement, SG350-28SFP-K9-NA, to anchor the purchase specification. The older model reached end of sale on October 4, 2018. Before issuing the PO, confirm the required regional ordering variant and compatibility of retained transceivers.
When a small-business network needs separate departmental subnets with local communication between them, size the interface plan before selecting hardware. The switch supports 128 IP interfaces across physical ports, link aggregation groups, VLAN interfaces and loopback interfaces. Specify the planned interface allocation and gateway arrangement in the configuration requirements accompanying the PO.
For a rollout requiring configuration and image preparation before installation, the switch supports dual software images and front-panel USB transfers. Establish the approved software image and saved configuration during staging rather than relying on inherited settings. Include the staging requirements and required console connection accessories on the purchase order.
10G uplinks to upstream switches
SG350-28SFP has Gigabit SFP interfaces rather than 10G interfaces. Its fixed uplink positions cannot provide a 10G connection, and no removable uplink card provides a speed upgrade.
PoE power for connected endpoints
SG350-28SFP supplies data connectivity but no PoE output on its copper combo ports. Powered endpoints therefore require a separate power source rather than power from this switch.
Fanless operation in quiet installations
SG350-28SFP uses one cooling fan rather than passive cooling. An installation that explicitly requires a fanless chassis cannot use this model to meet that requirement.
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| SG350-28SFP |  CBS350-16T-2G |  CBS350-8P-2G |  CBS350-24P-4X |  CBS350-8T-E-2G | |
|---|---|---|---|---|---|
| Depth | 203 mm | 272 mm | 272 mm | 299 mm | 185 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-Mount 1U | Desktop | Desktop | Rack-Mount 1U | Desktop |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | SG350-28SFP | CBS350-16T-2G | CBS350-8P-2G | CBS350-24P-4X | CBS350-8T-E-2G |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 34.3W | 18.63W | 83.17W | 240.4W | 12.56W |
| Switching Capacity | 56 Gbps | 36 Gbps | 20 Gbps | 128 Gbps | 20 Gbps |
| Weight | 2.7 kg | 1.78 kg | 2.59 kg | 3.68 kg | 1.39 kg |
| Width | 440 mm | 268 mm | 268 mm | 445 mm | 268 mm |
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Reviewed on the 18 September 2019
24-port SFP switch provides reliable connectivity for high-performance fiber networks.
Reviewed on the 30 November 2022
Durable, professional-grade solution with easy management.
Reviewed on the 30 April 2026
Efficient switch delivering consistent throughput and minimal downtime.
Reviewed on the 9 April 2019
Stable network performance for multiple SFP connections.
Reviewed on the 15 June 2018
Professional-grade and reliable solution for medium-sized networks.
SG350-28SFP identifies a Gigabit member of the 350 family: SG350 is the model-family prefix, 28 denotes 28 logical network ports, and SFP identifies the fiber-oriented configuration. The hardware provides 24 SFP access slots plus two dedicated SFP uplinks and two copper/SFP combo uplinks.
SG350-28SFP supports an HTTP/HTTPS web interface, Textview CLI through the console or SSH/Telnet, and SNMP versions 1, 2c and 3. Network-level options include Smart Network Application, FindIT Network Manager with an embedded Probe, FindIT Network Discovery Utility and Cisco Active Advisor. Specify the intended management path before staging.
SG350-28SFP reached end of sale on July 30, 2022, and its last date of support is July 31, 2027. Software maintenance ended July 30, 2023. The designated successor, CBS350-24S-4G-NA, is also discontinued, with no current migration product in that direct replacement chain.
SG350-28SFP is offered new sealed or certified refurbished, with ORM warranties of up to 3-year extended coverage for new units and up to 1 year for refurbished units. Every condition has 30-day returns; terms apply. Cisco's limited lifetime hardware warranty is separately bounded by the last support date, July 31, 2027.
SG350-28SFP replaces SG300-28SFP-K9-AU, SG300-28SFP-K9-EU, SG300-28SFP-K9-NA and SG300-28SFP-K9-UK through corresponding regional variants. Those older switches reached end of sale on October 4, 2018, and Cisco support ended October 31, 2023. Match the regional variant and reassess retained optics before using the replacement in an existing installation.
Yes, SG350-28SFP supports static inter-VLAN routing, with 990 IPv4 static routes and 128 IP interfaces. PBR can select next hops using IPv4 or IPv6 access rules. Physical ports, link aggregation groups, VLAN interfaces and loopback interfaces can provide routed interfaces, so specify the intended gateway and interface allocation before deployment.
SG350-28SFP supports MGBSX1 for multimode fiber up to 500 m, MGBLX1 for single-mode fiber up to 10 km and MGBLH1 for single-mode fiber up to 40 km. GLC-LH-SMD and GLC-BX-U are also supported at 1 Gbps. Match fiber type, reach and the remote interface when specifying each transceiver.
SG350-28SFP uses an internal universal AC supply accepting 100-240V AC at 50-60 Hz. Worst-case system consumption is 32W at 110V or 34.3W at 220V. The supply powers the switch electronics; the copper combo interfaces do not provide PoE output to connected endpoints.
Two copper Ethernet connections are available on Cisco SG350-28SFP through its 10/100/1000 combo ports. Each copper connector shares one logical interface with an SFP slot, so only one side of each pair can be active. The remaining SFP-only interfaces retain their separate network connections.
56 Gbps switching capacity and 41.66 Mpps forwarding are available on SG350-28SFP. A shared 1.5 MB packet buffer serves the ports, while the MAC table supports 16000 addresses. These figures describe switching and forwarding resources; evaluate the traffic pattern and required upstream link speeds before specifying the switch.
Cisco SG350-28SFP occupies a 1U rack position in a 440 mm-wide chassis measuring 44 mm high and 203 mm deep. The switch weighs 2.7 kg and uses one cooling fan. Allow suitable cable clearance and keep the installation within its 0°C to 50°C operating range.
SG350-28P provides PoE+ on 24 copper access ports, while SG350-28SFP has no PoE output and uses SFP access slots. Both models are discontinued. The PoE model addresses powered copper endpoints in retained networks; the SFP model addresses fiber connections without endpoint power delivery.
SG350-28SFP uses an internal AC power supply, whereas SG350-10SFP uses an external AC supply. Both models are discontinued, and the smaller model reduces the fiber access count from 24 to 8. Buyers maintaining larger fiber installations need the internal-power configuration; smaller retained installations must account for the separate adapter.
SG350-52 carries 48 copper access ports, compared with 24 SFP access slots on SG350-28SFP. Both models are discontinued, and both retain four Gigabit uplink positions. Buyers maintaining copper-dense installations need the 48-port configuration; buyers maintaining fiber-facing connections need the 24-slot SFP configuration instead.
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