Cisco Catalyst WS-C3750-48PS-S 48-Port 10/100 PoE Switch 4xSFP

Catalyst 3750 48-Port PoE

The Cisco Catalyst 3750 WS-C3750-48PS-S is a StackWise access switch with 48 Fast Ethernet PoE ports and four SFP uplinks. The -S suffix denotes the IP Base feature set. This generation remains common as spare or expansion hardware on plants that still run 10/100 edge devices. It is not a Catalyst 3750-X or 9300 1G access switch. PoE on the 48PS variant powers legacy phones and cameras within the chassis PoE budget. StackWise cables join multiple 3750 units into one logical stack when the stack modules and cables are present.

Additionally, Fast Ethernet downlinks are enough for many analog-replacement IP phones. Therefore this SKU still appears on maintenance BOMs. However, Wi-Fi 6 APs and HD cameras usually need Gigabit. Consequently, do not use this as a new wireless access-layer leaf unless the AP backhaul is known to fit 100 Mbps.

Key Features

• 48× 10/100 PoE ports
  IEEE 802.3af-class power on Fast Ethernet for phones and thin clients.

• Four SFP uplinks

  • 1G fibre or copper SFPs to distribution.
  • Optics sold separately.

• IP Base software
  Static routing, SVIs, and standard Layer 2 features; IP Services (-E) is a different SKU.

• StackWise
  Stack ports and cables (ordered/used per hardware) create a single control plane across members.

• IOS CLI
  Classic Catalyst IOS operations for teams already trained on 3560/3750.

Specifications

What’s in the Box

• WS-C3750-48PS-S chassis

• Power cord

• Rack kit as supplied

• Documentation

Stack cables and SFPs are separate line items.

Why Choose This 3750

• Matches existing 3750 stacks that still need a 48PS member.

• PoE Fast Ethernet remains valid for many analog-era IP phones.

• IP Base covers static routing at the closet without an -E license.

• SFP uplinks keep fibre to the core.

Additionally, check Cisco’s last-day-of-support notices for this generation. Therefore treat new deployments as tactical, not a 10-year architecture. However, configuration syntax is familiar. Consequently, restore from a matching IOS train and feature set. Verify PoE inline power with a meter on the first camera you connect.

See networking switches.