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Silver 1U rackmount switch with 24 RJ45 ports and four SFP+ cages

Mikrotik

Mikrotik CRS328-24P-4S+RM 24-port Gigabit switch, 4× SFP+, PoE, 500W

SKU CH-QDPD-D2R4T

A 28-port rackmount switch with 24 Gigabit Ethernet ports, four 10 Gbps SFP+ uplinks and 802.3af/at PoE delivering up to 30 W per port from a 500 W supply

  • 24 Gigabit ports connect every device on the network
  • Four 10 Gbps SFP+ uplinks remove backbone bottlenecks
  • 3 af/at PoE powers cameras and APs without extra injectors
  • 450 W guaranteed PoE budget keeps all ports fed under full load
  • Dual-boot RouterOS or SwOS lets you pick routing or pure switching

28-port Gigabit switch with PoE

The CRS328-24P-4S+RM delivers 24 Gigabit Ethernet ports and four 10 Gbps SFP+ uplinks in a single 1U rackmount chassis. Each RJ45 port supports 802.3 af/at PoE with auto-sensing, plus passive and low-voltage options. A built-in 500 W AC supply powers the unit and reserves 450 W for connected devices, distributed as 150 W per every eight ports. The dual-boot design lets you choose RouterOS for Layer 3 routing or SwOS for a streamlined switching feature set.

PoE budget and uplink constraints

The 500 W supply consumes up to 44 W internally, leaving a guaranteed 450 W for PoE loads. Individual ports can supply up to 30 W at high voltage or 26 W at low voltage, so dense high-power deployments must stay within the per-octet 150 W ceiling. The four SFP+ cages accept optical or copper modules for 10 Gbps links, but modules are not included and must be sourced separately. Non-blocking Layer 2 switching handles full wire-speed traffic across all 28 independent ports without oversubscription.

Rackmount build and daily operation

A 1U steel enclosure with integrated 100-240 V AC power supply fits standard racks and eliminates external bricks. The 800 MHz CPU and 512 MB RAM run RouterOS v7 or SwOS under a License Level 5 entitlement, providing VLAN, QoS, and management features without recurring fees. Fan-cooled operation is audible in quiet rooms, so placement away from workspaces is advisable. Front-panel LEDs give immediate port status, while the rear IEC inlet simplifies UPS integration for continuous uptime.

Highlights

  • 24 Gigabit ports connect every device on the network
  • Four 10 Gbps SFP+ uplinks remove backbone bottlenecks
  • 3 af/at PoE powers cameras and APs without extra injectors
  • 450 W guaranteed PoE budget keeps all ports fed under full load
  • Dual-boot RouterOS or SwOS lets you pick routing or pure switching

Specifications

BrandMikroTik
ModelCRS328-24P-4S+RM

Questions about this item

Should I pick the 24-port Gigabit model or a version with more SFP+ ports?

This unit has 24 Gigabit Ethernet ports and four SFP+ ports for 10 Gbps uplinks; no other port-count variant is listed.

What does the 500 W power supply actually deliver to PoE devices?

The switch itself draws up to 44 W, leaving 450 W guaranteed for PoE — 150 W per each block of eight Ethernet ports.

How do the SFP+ ports limit real-world throughput?

Each SFP+ port runs at up to 10 Gbps with compatible fibre or copper modules, and the non-blocking Layer 2 fabric handles full line rate across all 28 ports.

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