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Cisco Catalyst 3750-24PS WS-C3750-24PS-S
The Cisco Catalyst 3750-24PS WS-C3750-24PS-S is a stackable managed Ethernet switch featuring 24 × 10/100 PoE ports and 2 Gigabit SFP uplink ports. It supports IEEE 802.3af PoE and Cisco pre-standard PoE, making it suitable for IP phones, wireless access points and legacy enterprise network deployments.
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Product Description
The Cisco Catalyst 3750-24PS WS-C3750-24PS-S is an enterprise-class, stackable Layer 3 switch designed for reliable network connectivity and Power over Ethernet deployments.
The switch provides 24 Fast Ethernet 10/100 PoE ports and 2 SFP-based Gigabit Ethernet ports for uplink connectivity. Cisco identifies the WS-C3750-24PS-S as an IP Base model and part of the original Catalyst 3750 10/100 PoE switch family.
Its PoE ports support IEEE 802.3af as well as Cisco pre-standard PoE, making the switch suitable for compatible Cisco IP phones and Aironet wireless access points. Each 10/100 port can deliver up to 15.4W, with a maximum switch PoE output of 370W.
Key Features
- Cisco Catalyst 3750 Series switch
- Model: WS-C3750-24PS-S
- 24 × 10/100 Ethernet PoE ports
- 2 × SFP-based Gigabit Ethernet ports
- IEEE 802.3af PoE support
- Cisco pre-standard PoE support
- Up to 15.4W per PoE port
- Up to 370W total PoE output
- Cisco IP Base software feature set
- Cisco StackWise technology
- 32 Gbps stacking interconnect
- 1U rack-mountable design
- Managed enterprise switching
- Suitable for IP phones and wireless access points
Technical Specifications
| Specification | Details |
|---|---|
| Product | Cisco Catalyst 3750-24PS |
| Model / SKU | WS-C3750-24PS-S |
| Ethernet Ports | 24 × 10/100 |
| PoE Ports | 24 |
| PoE Standard | IEEE 802.3af |
| Cisco Pre-standard PoE | Supported |
| Maximum PoE per Port | 15.4W |
| Maximum PoE Output | 370W |
| Uplink Ports | 2 × Gigabit SFP |
| Software Feature Set | IP Base |
| Switching Fabric | 32 Gbps |
| Forwarding Rate | 6.5 Mpps |
| MAC Address Table | Up to 12,000 |
| Stacking | Cisco StackWise |
| Form Factor | 1U |
| AC Input | 100–240V AC |
| Operating Temperature | 0°C–45°C |
| Dimensions | 4.4 × 44.5 × 30.1 cm |
| Weight | Approximately 5.1 kg |
Cisco’s hardware documentation specifies the 3750-24PS at 495W power consumption/rating, 370W maximum PoE output, 5.1 kg weight and 4.4 × 44.5 × 30.1 cm dimensions.
PoE Capability
The WS-C3750-24PS-S supports IEEE 802.3af PoE and Cisco pre-standard PoE.
Compatible devices can receive both network connectivity and electrical power through the Ethernet cable. Cisco specifically identifies compatible applications including Cisco IP phones and Cisco Aironet access points.
The maximum PoE capability is:
- Up to 15.4W per port
- Up to 370W for the switch
- IEEE 802.3af support
- Cisco pre-standard PoE support
Important: This is an older PoE/802.3af platform, not a modern PoE+ (802.3at) switch.
SFP Uplink Connectivity
The WS-C3750-24PS-S includes 2 SFP-based Gigabit Ethernet ports, providing fiber or compatible SFP connectivity for uplinks. Cisco lists these two SFP ports as part of the standard configuration for the 24PS-S model.
Cisco StackWise Technology
The Catalyst 3750 family introduced Cisco StackWise technology, using a 32 Gbps stack interconnect to combine compatible switches into a unified switching system.
This makes the Catalyst 3750 useful for legacy environments where centralized stack management and resilient switching are required.
Suitable Applications
The Cisco WS-C3750-24PS-S can be used for:
- Cisco IP phone deployments
- Legacy wireless access points
- Small enterprise networks
- Branch-office networks
- Campus access networks
- Legacy Cisco infrastructure
- Network laboratories
- Network equipment replacement
- Used/refurbished Cisco deployments
Important Product Classification
For SEO and customer accuracy, describe this product as:
Cisco Catalyst 3750-24PS 24-Port 10/100 PoE Switch
Do not describe it as a 24-port Gigabit Ethernet switch. The 24 PoE ports are 10/100, while the two SFP uplinks provide Gigabit Ethernet connectivity. Cisco’s official product documentation makes this distinction clear.
FAQs
1. What is the Cisco WS-C3750-24PS-S?
The WS-C3750-24PS-S is a Cisco Catalyst 3750 managed switch with 24 10/100 PoE ports, 2 Gigabit SFP ports and the IP Base software feature set.
2. Is the Cisco WS-C3750-24PS-S a Gigabit switch?
The 24 main Ethernet ports are 10/100 Mbps, not Gigabit. The switch has 2 Gigabit SFP uplink ports.
3. Does the WS-C3750-24PS-S support PoE+?
No. The WS-C3750-24PS-S is an older IEEE 802.3af PoE switch with Cisco pre-standard PoE support. It should not be advertised as an 802.3at PoE+ switch.
4. How much PoE power does the Cisco 3750-24PS provide?
The switch can provide up to 15.4W per PoE port and up to 370W total PoE output.
5. How many SFP ports does the WS-C3750-24PS-S have?
The model has 2 SFP-based Gigabit Ethernet ports for uplink connectivity.
6. Does the Cisco 3750-24PS support stacking?
Yes. The Catalyst 3750 series supports Cisco StackWise, using a 32 Gbps stacking interconnect.
7. Can the WS-C3750-24PS-S power Cisco IP phones?
Yes. Its PoE ports support IEEE 802.3af and Cisco pre-standard PoE, including support for compatible Cisco IP phones and Aironet access points.
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