Cisco CBS110-24PP-NA - 24-Port Gigabit Switch | 12 PoE Shared 100W | 2 SFP Combo - Refresh

The Cisco CBS110-24PP-NA is a 24-port Gigabit Ethernet Partial PoE unmanaged switch for small business networks, retail, hospitality, and quiet office environments. It provides 24 x 10/100/1000 RJ-45 downlinks — 12 of which support IEEE 802.3af PoE from a shared 100W power budget (not 100W per port) for VoIP phones, IP cameras, and 802.3af wireless access points. Two combo Gigabit SFP slots share with two of the RJ-45 ports for fiber uplinks. With 48 Gbps non-blocking switching capacity at the line-rate edge, a 2 Mbit packet buffer, and fanless silent operation, the CBS110-24PP delivers reliable Layer 2 performance at the access edge. This is a Cisco Refresh unit — factory-restored by Cisco to original specifications.

Cisco CBS110-24PP-NA - Key Features & Benefits

• 24 Gigabit Ports - 12 with 802.3af PoE (100W Shared Budget): Twelve of the 24 RJ-45 ports support IEEE 802.3af PoE at up to 15.4W per port, drawing from a single 100W budget shared across all PoE ports. Plan endpoint wattage accordingly — for example, twelve 7W IP phones fit; six 15W APs do not.
• 2 Combo Gigabit SFP Slots (Not Additional Ports): The two SFP slots are combo with two of the 24 RJ-45 ports — inserting an SFP disables the paired copper port. Total active ports remain 24. Compatible Cisco SFPs: MGBSX1 (multimode 500m), MGBLX1 (single-mode 10km), MGBLH1 (40km), MGBT1 (1000BASE-T 100m). SFP modules sold separately.
• Non-Blocking 48 Gbps Switching at the Access Edge: 48 Gbps switching capacity and 35.7 Mpps forwarding rate are exactly enough for line-rate Gigabit on every port simultaneously — appropriate for access-layer deployments, not aggregation or core. Includes 2 Mbit packet buffer, 8K MAC table, and 9216-byte jumbo frame support.
• Layer 2 Reliability Features: Hardware loop detection prevents broadcast storms, cable diagnostics identify wiring faults, and basic 802.1p priority QoS with four hardware queues and Weighted Round-Robin scheduling automatically prioritizes voice and video traffic. Note: as an unmanaged switch, QoS classification is fixed and not user-configurable — advanced policies require a managed model such as the Cisco CBS250 or CBS350.
• Fanless Silent Operation: Completely fanless with an internal universal AC PSU (100–240V, 50/60 Hz) — suitable for open offices, classrooms, retail floors, and noise-sensitive deployments. 1U rack-mountable chassis (17.32 x 7.97 x 1.73 in) also supports desktop and wall-mount.
• Energy Efficient Ethernet (IEEE 802.3az): Reduces power draw on idle Gigabit links by negotiating low-power-idle states — typical savings are modest (a few watts at the switch level) but help meet ENERGY STAR and corporate sustainability targets across large port counts.

Cisco CBS110-24PP-NA - Technical Specifications

• Manufacturer: Cisco
• Part Number: CBS110-24PP-NA-RF (Cisco Refresh)
• Product Type: Unmanaged Gigabit Ethernet Partial PoE Switch
• Ports: 24 x 10/100/1000 RJ-45 (12 PoE) • 2 x Combo Gigabit SFP uplinks (share with 2 RJ-45 ports)
• PoE Standard: IEEE 802.3af, 15.4W max per port
• PoE Power Budget: 100W shared across all 12 PoE ports (not per port)
• Compatible SFP Modules: Cisco MGBSX1, MGBLX1, MGBLH1, MGBT1 (sold separately)
• Switching Capacity: 48 Gbps non-blocking (line-rate Gigabit on all ports)
• Forwarding Rate: 35.7 Mpps (64-byte packets)
• Packet Buffer: 2 Mbit
• MAC Address Table: 8K entries
• Jumbo Frame: 9216 bytes
• QoS: 802.1p priority based, 4 hardware queues, WRR (fixed; not user-configurable)
• CPU / Memory: 400 MHz ARM CPU • 64 MB DRAM • 8 MB Flash
• Standards: IEEE 802.3, 802.3u, 802.3ab, 802.3z, 802.3x, 802.3af, 802.3az, 802.1p
• Power Supply: Internal AC 100–240V, 50/60 Hz, universal
• Cooling: Fanless
• Mounting: Desktop, wall-mount, or 19-inch rack (1U)
• Dimensions (W x D x H): 17.32 x 7.97 x 1.73 in (440 x 203 x 44 mm)
• Weight: 6.57 lb (2.98 kg)
• UPC: 889728326421
• Condition: Cisco Refresh

Cisco CBS110-24PP-NA - Frequently Asked Questions (FAQ)

• Does this switch support PoE+ (802.3at) devices?
  No. The CBS110-24PP supports IEEE 802.3af PoE only — up to 15.4W per port, with a 100W budget shared across all 12 PoE ports. Devices that strictly require 802.3at PoE+ (30W per port) — such as Wi-Fi 6 access points or PTZ cameras — will not power up. For PoE+ support, choose a managed model such as the Cisco CBS250 or CBS350 series.
• Are the SFP slots in addition to the 24 copper ports?
  No. The 2 SFP slots are combo ports that share with 2 of the 24 RJ-45 ports. When an SFP module is plugged in, the paired copper port is disabled — so the total number of simultaneously active ports remains 24, not 26. SFP modules are sold separately; recommended Cisco modules are MGBSX1, MGBLX1, MGBLH1, and MGBT1.
• How configurable is the QoS on this switch?
  QoS is fixed and not user-configurable. The switch automatically applies 802.1p priority tagging with four hardware queues and Weighted Round-Robin scheduling — sufficient for prioritizing voice and video traffic on small business networks. Advanced policies (DSCP marking, custom ACLs, rate limiting) require a managed switch.
• What is "Cisco Refresh"?
  Cisco Refresh is the official Cisco-certified factory-restored program. Units are remanufactured by Cisco, tested to original specifications, and ship with the original Cisco part number followed by an "-RF" suffix.

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