Product overview

TheCisco SG250X-48P-K9is aCisco 250 Series Smart Switchdesigned for small-to-midsize business (SMB) access-layer deployments that need:

• High-density 1GbE edge connectivity

• Power over Ethernet Plus (PoE+) for phones/APs/cameras

• 10 Gigabit uplinksfor fast aggregation to servers or core switches

• “Smart” (web-managed) features beyond unmanaged switches, includingadvanced Layer 2,security controls,QoS, andbasic Layer 3 static routing.

It is positioned below Cisco’s fully managed enterprise Catalyst lines, but provides many of the features SMBs typically require without the operational overhead or licensing complexity associated with higher-end platforms.

The SG250X-48P model provides:

• 48 × 10/100/1000 (1GbE) PoE+ ports

• 4 × 10 Gigabit Ethernet uplinks, implemented as:

  • 2 × 10GBASE-T (copper)

  • 2 × SFP+ class="p3">
    

    This combination is particularly useful when you want:

    • Copper 10G for short-run connections to nearby servers or NAS devices

    • SFP+ for longer runs to a distribution switch, MDF/IDF, or fiber plant

    
    

    PoE+

    • DeliversPoE+ (IEEE 802.3at)to connected endpoints.

    • Cisco’s datasheet specifies a375W PoE power budgetfor the SG250X-48P.

    • PoE+ supports up to30W per port, enabling modern access points, IP phones, cameras (including higher-draw models), etc.

    
    

    Form factor and physical

    • 1U rack-mount switch

    • Dimensions listed for SG250X-48P:440 × 44 × 350 mm(17.3 × 1.73 × 13.78 in)

    • Weight:4.84 kg (10.67 lb)

    Software and capabilities (what makes it “Smart”)

    
    

    Cisco’s 250 Series Smart Switches are intended to bridge the gap between unmanaged switches and fully managed enterprise switches, providing:

    
    

    Manageability

    • Web-based GUI(simple and advanced modes)

    • Smart Network Application (SNA)embedded for multi-switch monitoring/configuration

    • FindIT Network Manager / Probesupport for discovery and lifecycle management

    • Front-panelUSBport for easier image/config transfer and upgrades

    
    

    Layer 2 + security

    • VLANs, spanning tree, link aggregation, port mirroring, etc. (typical SMB managed-switch functionality)

    • Security controls including:

      • 802.1X authentication

      • ACLs

      • Denial-of-Service (DoS) prevention class="p3">
        

        QoS and voice readiness

        • QoS features suitable for prioritizing:

          • Voice

          • Video

          • Latency-sensitive business apps

        • Cisco emphasizes voice VLAN automation and discovery protocols aimed at simplifying IP telephony rollouts.

        
        

        Layer 3 (limited)

        • IncludesLayer 3 static routing, intended for basic inter-VLAN routing without needing a separate router for internal traffic.

          This is not the same as a full dynamic-routing enterprise switch, but it is enough for many SMB segmentation needs.

        
        

        IPv6 readiness

        • Native IPv6 support alongside IPv4, with certifications cited by Cisco for IPv6 readiness (useful for class="p2">

          Typical deployment scenarios

          
          

          This switch is commonly used as:

          1. PoE access switch for office floors

             • Powers IP phones and Wi-Fi APs while providing 1GbE desktop class="p1">Surveillance edge

               • Centralizes and powers many IP cameras, with 10G uplinks back to class="p1">SMB core/distribution for smaller sites

                 • Especially where static routing is sufficient and 10G uplinks provide backbone class="p3">
                   

                   Cisco explicitly highlights use cases around desktop connectivity, unified communications, and wireless expansion using PoE+ and VLAN/QoS capabilities.