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WS-C3750X-48U-S
Cisco WS-C3750X-48U-S Catalyst 3750-X 48-Port Gigabit UPOE S...
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WS-C3750X-48U-S provides Cisco UPOE on 48 fixed 10/100/1000 RJ-45 access ports in a managed Layer 3 switch, with IP Base software and a 1U rack-mount chassis. The Catalyst 3750-X serves enterprise access networks connecting phones, wireless access points, workstations, and other powered endpoints. Its uplink bay is empty in the base configuration: C3KX-NM-1G adds Gigabit fiber connectivity, C3KX-NM-10G or C3KX-SM-10G adds 10G SFP+ connectivity, and C3KX-NM-10GT adds copper 10G uplinks. The discontinued WS-C3750X-48PF-S uses PoE+ rather than UPOE, separating ordinary powered-endpoint requirements from higher-draw devices. A 48-port Gigabit UPOE access switch with modular uplinks therefore needs its upstream connection hardware specified separately rather than assumed to arrive installed.
WS-C3750X-48U-S price for new stock is $19,288.50, a 50% saving from the Cisco list price of $38,577.00. WS-C3750X-48U-S refurb price is $619.50. WS-C3750X-48U-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3750X-48U-S for additional pricing. Browse the full Cisco 3750X Catalyst Switches series or explore all Cisco products.
160 Gbps switching capacity provides the switching fabric, while 101.2 Mpps forwarding applies to configurations fitted with two 10G uplinks. 800W of shared endpoint power requires allocations to stay within the installed supply's budget. Static, RIPv1, RIPv2, RIPng, EIGRP stub, and OSPF for routed access provide the included routing options; full EIGRP, BGPv4, IS-ISv4, PBR, and PIM require IP Services activation. WS-C3750X-48U-S carries 256 MB of DRAM for operation and 64 MB of flash for software storage. SDM templates trade address learning against routing resources: the VLAN template reaches 12000 MAC entries, while the routing template supports 11000 total unicast routes, so those maximums are not simultaneous. StackWise Plus joins nine members through a 64 Gbps stack interconnect under one management address. RSTP and MSTP handle spanning-tree convergence, LACP forms aggregated links, and MACsec supports encryption on host-facing connections. Full OSPF is not included in the supplied feature set.
WS-C3750X-48U-S is offered new sealed or certified refurbished; ORM warranty coverage is up to a 3-year extended warranty for new units and up to 1 year for certified refurbished units. Certified refurbished units are inspected and bench-tested for power-on, POST, rated-speed links on every port, clean boot, and PoE output under load on every powered port; firmware is verified and configuration is wiped to factory default. Specify the condition, quantity, accessories, and delivery region on the purchase order; returns run for 30 days on every condition, with terms applying. Enterprise and volume orders can use PO acceptance, Net-30 for government, and RMA with advance replacement across UK, EU, US, and MEA regional stock and RMA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS |
License Tier | IP Base |
Port Configuration | 48 x 1G UPOE / Modular uplink bay |
PoE Budget | 800W / 1800W with two C3KX-PWR-1100WAC supplies |
Stacking | StackWise Plus / 9 members / 64 Gbps |
Replacement PID | C9300-48U-A / WS-C3850-48U-S discontinued |
Scenario: A 500-user enterprise campus requires consolidated 802.11ac Wave 2 APs and IP telephony. Solution: Deploy a stack of WS-C3750X-48U-S Catalyst 3750X 48-Port UPOE IP Base switches with 740 W UPOE power budget, StackWise Plus 480 Gbps interconnect and IP Base routing. Benefit: Simplified management, deterministic QoS for voice and wireless, seamless scalability and centralized power budgeting.
Scenario: A smart building installs 4K PTZ PoE+ cameras, door controllers and intrusion sensors. Solution: Use WS-C3750X-48U-S Catalyst 3750X 48-Port UPOE IP Base with flexible NetFlow, ACL segmentation and dual 10 Gbps SFP+ uplinks. Benefit: High-density PoE for critical security devices, reduced cabling, granular traffic and power control, plus hardened network segmentation.
Scenario: A retail chain’s 50 branch offices host PoS terminals, digital signage and guest Wi-Fi. Solution: Deploy WS-C3750X-48U-S Catalyst 3750X 48-Port UPOE IP Base using StackPower redundancy, Intelligent QoS and IP Base dynamic routing. Benefit: Continuous uptime with power-fail resilience, predictable performance under load, streamlined remote management and rapid service restoration.
When high-draw endpoints are added to an existing installation, two C3KX-PWR-1100WAC supplies provide an 1800W UPOE budget, supporting 30 connections at 60W each rather than full-power loading across all ports. Total endpoint allocations must fit that shared budget, so specify the additional supply and endpoint power requirements before the PO.
When an existing stack needs a shared power pool, a direct Cisco StackPower group connects four switches independently of the data stack. CAB-SPWR-30CM= and CAB-SPWR-150CM= are the power-interconnect options. Redundancy mode reserves the largest supply's contribution, so identify the operating mode and cable lengths before ordering an expansion member.
When a spare is being staged before installation, the USB console takes input priority over the rear RJ-45 console, although both continue displaying output. The USB console cable is included in accessory kit 800-33434. Specify 800-33434 when USB access is required, and check the staging workstation's driver requirements before ordering.
Active Cisco hardware support
Cisco service for WS-C3750X-48U-S ended October 31, 2021. The current replacement chain ends at C9300-48U-A, a 48-port UPOE model with Network Advantage.
Full dynamic routing without upgrades
The included IP Base feature set excludes full EIGRP, BGPv4, IS-ISv4, and full OSPF. These functions require IP Services activation rather than a firmware change alone.
48 simultaneous 60W endpoints
Even two C3KX-PWR-1100WAC supplies support only 30 UPOE connections at 60W each. The 48-port chassis cannot supply 60W on every access port simultaneously.
Multigigabit copper access ports
The fixed access ports stop at 1Gbps. Installing C3KX-NM-10GT adds copper 10G uplinks, but does not increase the speed of the endpoint-facing access ports.
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| WS-C3750X-48U-S |  WS-C3750X-48T-E |  WS-C3750X-24P-L |  WS-C3750X-24U-L |  WS-C3750X-48P-L | |
|---|---|---|---|---|---|
| Depth | 495 mm | 18.9 inches | 495 mm | 11.13 inches | 460 mm |
| Ethernet Technology | Gigabit Ethernet | 10/100/1000 | Gigabit Ethernet | 10/100/1000 | Gigabit Ethernet |
| Flash Memory | 64 MB | 256 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-Mount 1U | Rack-mount | Rack-Mount 1U | Rack-mount | Rack-Mount 1U |
| Height | 44.5 mm | 1.75 inches | 44.5 mm | 1.73 inches | 44.5 mm |
| Manufacturer Part Number | WS-C3750X-48U-S | WS-C3750X-48T-E | WS-C3750X-24P-L | WS-C3750X-24U-L | WS-C3750X-48P-L |
| Memory | 256 MB | 512 MB | 256 MB | 256 MB | 256 MB |
| Switching Capacity | 160 Gbps | 176 Gbps | 160 Gbps | 128 Gbps | 160 Gbps |
| Weight | 7.6 kg | 25 lbs | 7.2 kg | 23 lbs | 7.5 kg |
| Width | 445 mm | 17.5 inches | 445 mm | 17.32 inches | 445 mm |
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dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviewed on the 2 August 2022
48-port UPOE IP Services switch is stable and easy to manage.
Reviewed on the 11 May 2017
High-density deployments are seamless and reliable.
Reviewed on the 19 May 2023
Predictable operation with minimal maintenance required.
Reviewed on the 20 November 2019
Handles multiple PoE devices effortlessly.
Reviewed on the 11 March 2022
Cisco build quality ensures long-term stability.
WS-C3750X-48U-S identifies a Catalyst 3750-X switch with 48 Gigabit UPOE access ports and the IP Base feature set. WS-C3750X identifies the switch family, 48 gives the access-port count, U denotes UPOE, and S identifies IP Base. The configuration includes C3KX-PWR-1100WAC; an uplink module is not included.
WS-C3750X-48U-S supports the browser-based device manager, Cisco Network Assistant, CiscoWorks LMS, SNMP, and the Cisco IOS CLI through a console or Telnet session. SSH requires a cryptographic software image. Local console choices are the front USB mini-Type B connection and the rear RJ-45 connection.
WS-C3750X-48U-S provides an 800W shared UPOE budget with its default C3KX-PWR-1100WAC supply, with individual UPOE ports capable of 60W. Two C3KX-PWR-1100WAC supplies increase the budget to 1800W, supporting 30 connections at 60W each. Port capability does not mean every port can deliver its maximum simultaneously.
WS-C3750X-48U-S accepts C3KX-NM-1G for four 1G fiber uplinks, C3KX-NM-10G for two 10G SFP+ uplinks, C3KX-NM-10GT for two copper 10G uplinks, or C3KX-SM-10G for two 10G SFP+ service-module uplinks. The base switch ships without an uplink module, so include the selected card and any required optics in the order.
Nine Catalyst 3750-X switches can form a StackWise Plus data stack with a 64 Gbps stack interconnect. CAB-STACK-50CM, CAB-STACK-1M, and CAB-STACK-3M are supported data-stack cables; CAB-STACK-50CM accompanies the original switch. LAN Base members cannot mix with IP Base or IP Services members, so feature-set compatibility matters when adding a member.
Yes, WS-C3750X-48U-S provides Layer 3 routing with IP Base, including Static, RIPv1, RIPv2, RIPng, EIGRP stub, and OSPF for routed access. The routing SDM template supports 11000 total unicast routes. Full OSPF, full EIGRP, BGPv4, IS-ISv4, PBR, and PIM require IP Services activation.
No, WS-C3750X-48U-S ships with one C3KX-PWR-1100WAC supply, while its second internal supply bay is empty. A second C3KX-PWR-1100WAC can be specified for additional power capacity or a redundant configuration. Redundancy is optional rather than supplied as standard, and endpoint allocations must reflect the selected operating arrangement.
IP Base is included with WS-C3750X-48U-S and activates through a license file. Original IP Services upgrade paths comprised factory activation C3750X-48-IOS-S-E, paper license C3750X-48-S-E, and electronic license L-C3750X-48-S-E. Changing a software image does not replace license activation, so verify the installed feature set before accepting a replacement unit.
WS-C3750X-48U-S is discontinued: end-of-sale was October 30, 2016, and Cisco service and hardware warranty support ended October 31, 2021. Its direct replacement, WS-C3850-48U-S, is also discontinued and reached its last support date on October 31, 2025. The forward replacement chain ends at C9300-48U-A.
WS-C3750X-48U-S supports 60W Cisco UPOE ports, while WS-C3750X-48PF-S supports 30W PoE+ ports; both models are discontinued. Both configurations have 48 Gigabit access ports and IP Base. For legacy replacement orders, the UPOE model suits higher-draw UPOE endpoints, while the PoE+ model suits endpoints within the lower per-port power limit.
WS-C3750X-48U-S includes IP Base, whereas WS-C3750X-48U-E includes IP Services; both models are discontinued. IP Services enables full OSPF, EIGRP, BGPv4, and IS-ISv4 beyond the included IP Base routing capabilities. In legacy like-for-like sourcing, the S model suits baseline routed access, while the E model suits existing IP Services requirements.
C9300-48U-A is the current endpoint of the replacement chain for WS-C3750X-48U-S, whose Cisco support ended October 31, 2021. The intermediate WS-C3850-48U-S is discontinued too. Both endpoints offer 48-port UPOE configurations: the older model suits legacy replenishment, while C9300-48U-A suits procurement of the current replacement family.
ORM Systems offers WS-C3750X-48U-S new sealed with up to a 3-year extended warranty, or certified refurbished with up to a 1-year warranty. Returns are available for 30 days on every condition; terms apply. Cisco's original enhanced limited lifetime hardware warranty and Cisco service ended October 31, 2021.
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