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WS-C3750X-48U-L
Cisco WS-C3750X-48U-L Catalyst 3750-X 48-Port Gigabit UPOE S...
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WS-C3750X-48U-L provides 48 Gigabit copper access ports with Cisco UPOE, combining managed enterprise access switching with limited static routing under LAN Base. Each powered port supports a maximum 60W allocation, subject to the shared power budget. The full-width 1U chassis belongs to the Cisco Catalyst 3750-X Series and connects phones, wireless access points, workstations, and UPOE-compatible endpoints. Modular uplinks accommodate fiber or copper connections rather than supplying fixed uplink ports in the base configuration. This 48-port Gigabit UPOE access switch retains the LAN Base feature set; advanced routing requires a separate feature upgrade. The discontinued WS-C3750X-48PF-L differs principally in endpoint power, supplying PoE+ rather than UPOE while retaining the same copper port density.
WS-C3750X-48U-L price for new stock is $15,823.50, a 50% saving from the Cisco list price of $31,647.00. WS-C3750X-48U-L refurb price is $409.50. WS-C3750X-48U-L is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3750X-48U-L for additional pricing. Browse the full Cisco 3750X Catalyst Switches series or explore all Cisco products.
160 Gbps switching capacity provides the switching fabric for access traffic. 101.2 Mpps forwarding applies to the configuration with two 10GbE uplinks, rather than an assumed forwarding rate for an empty uplink bay. 800W of available PoE power is shared across powered endpoints with the standard supply configuration. Static routing supports 16 routes under LAN Base, placing the supplied configuration in Layer 2+ rather than full dynamic routed access; OSPF and BGP are not included in that tier. WS-C3750X-48U-L carries 256 MB of DRAM and 64 MB of flash for Cisco IOS operation and local image storage. LAN Base supports 255 VLANs, while MAC address capacity varies with the selected switching template and reaches 12000 entries in the VLAN template. RSTP and MSTP provide spanning-tree operation, and DHCP Snooping, Dynamic ARP Inspection, and port security support access control. SSH management requires the cryptographic software image.
WS-C3750X-48U-L is offered new sealed or certified refurbished, with ORM warranties of up to a 3-year extended term for new units and up to 1 year for certified refurbished units; every condition includes 30-day returns, terms apply. Certified refurbished units are inspected and bench-tested for power-on and POST, clean boot, and every port linking at rated speed, with PoE output verified under load on every powered port; firmware is verified and configuration wiped to factory default. Specify condition, uplink requirements, and power supply configuration on the purchase order. For enterprise and volume POs, ORM Systems accepts POs, offers Net-30 for government and RMA with advance replacement, and provides regional stock and RMA across the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
License Tier | LAN Base |
Port Configuration | 48 x 1G UPOE / modular uplinks |
PoE Budget | 800W single supply / 1800W dual supply |
Stacking | StackWise Plus / nine members / 64 Gbps |
Lifecycle Status | Cisco support ended October 31, 2021 |
Replacement PID | C9300-48U-E / WS-C3850-48U-L discontinued |
In a large enterprise wiring closet, the WS-C3750X-48U-L stackable switch aggregates 48 10/100/1000 PoE+ ports to power VoIP phones and wireless access points. By leveraging StackWise™ technology and a 740W PoE+ budget per switch, IT teams achieve sub-millisecond failover and centralized power management, resulting in uninterrupted voice/video collaboration and simplified infrastructure scaling.
Deployed at the top of a 42U rack, the WS-C3750X-48U-L delivers 48 Gigabit Ethernet uplinks to hypervisor clusters and SAN gateways. Its non-blocking 176 Gbps switching fabric and hot-swappable SFP uplinks ensure low-latency traffic flow and seamless expansion. Outcome: streamlined VM migration, predictable East-West throughput, and reduced single-point failure risk in virtualized environments.
In a multi-tenant smart facility, the WS-C3750X-48U-L aggregates IP cameras, environmental sensors and access controllers over 48 PoE+ ports. Advanced QoS, Dynamic ARP Inspection and flexible VLAN segmentation isolate critical building systems. Benefit: centralized power delivery, real-time device monitoring, and hardened network security for scalable IoT deployments.
An existing LAN Base stack needing another member requires matching Catalyst 3750-X LAN Base switches; IP Base and IP Services members cannot mix with that feature set. Specify CAB-STACK-1M= or CAB-STACK-3M= when the included CAB-STACK-50CM cannot reach the adjacent chassis, and confirm the stack software before the PO.
A maintenance spare replacing a single-supply unit must preserve chassis cooling as well as the intended configuration. The unused second supply slot needs C3KX-PS-BLANK= rather than an open bay. Specify installed accessories and condition on the PO, then check that the spare includes the blank before staging.
A staging bench using both console connections must account for USB console input taking precedence over the rear RJ-45 console. Console output remains available through both connectors, but input is active through only one connection. Specify the intended console connection and verify terminal access before approving the staged unit for dispatch.
Active Cisco service coverage
Cisco service for this model ended October 31, 2021. C9300-48U-E is the current migration endpoint; the intermediate WS-C3850-48U-L is also discontinued.
60W power on every port
The maximum local UPOE budget is 1800W with two C3KX-PWR-1100WAC supplies, supporting 30 ports at 60W rather than all 48 simultaneously.
Dynamic routing with LAN Base
LAN Base supports 16 static routes, not OSPF or BGP. The supplied license therefore does not satisfy a dynamic routed-access requirement without an upgrade.
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| WS-C3750X-48U-L |  WS-C3750X-48T-L |  WS-C3750X-24T-L |  WS-C3750X-48T-S |  WS-C3750X-24P-S | |
|---|---|---|---|---|---|
| Depth | 495 mm | 460 mm | 460 mm | 460 mm | 460 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44.5 mm | 44.5 mm | 44.5 mm | 44.5 mm | 44.5 mm |
| Manufacturer Part Number | WS-C3750X-48U-L | WS-C3750X-48T-L | WS-C3750X-24T-L | WS-C3750X-48T-S | WS-C3750X-24P-S |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Power Consumption | 129.48W with C3KX-NM-10G installed / no PoE load | 145.4W (100% traffic with C3KX-NM-10GT at 115V AC) | 98.7W with C3KX-NM-10G at 100% traffic | 161.61W at 100% traffic with C3KX-SM-10G | 99.3W without PoE load using C3KX-NM-1G at 100% traffic |
| Switching Capacity | 160 Gbps | 160 Gbps | 160 Gbps | 160 Gbps | 160 Gbps |
| Weight | 7.6 kg | 7.4 kg | 7.1 kg | 7.4 kg | 7.2 kg |
| Width | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm |
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Reviewed on the 7 April 2018
48-port UPOE LAN Base switch delivers stable performance and reliable PoE.
Reviewed on the 24 May 2021
High-density deployment made simple and predictable.
Reviewed on the 25 November 2025
Cisco build ensures long-term reliability.
Reviewed on the 22 October 2019
Easy configuration and minimal downtime.
Reviewed on the 7 March 2019
Ideal for enterprise edge and access layer.
WS-C3750X-48U-L identifies a Catalyst 3750-X switch with 48 UPOE copper ports and LAN Base software. WS-C3750X is the family prefix, 48 is the access-port count, U identifies UPOE, and L identifies LAN Base. The base configuration includes C3KX-PWR-1100WAC but excludes an uplink module.
The Catalyst 3750-X supports a browser-based device manager, Cisco IOS CLI, Cisco Network Assistant, CiscoWorks LMS, and SNMP management. CLI access uses the local RJ-45 or USB console, or remote Telnet and SSH. SSH requires the cryptographic image, and USB console input takes precedence over RJ-45 console input.
WS-C3750X-48U-L reached end of sale on October 30, 2016, and its last date of Cisco support was October 31, 2021. Cisco service has ended. Its first replacement, WS-C3850-48U-L, is also discontinued, with support ending October 31, 2025; the migration chain continues to C9300-48U-E.
ORM Systems offers WS-C3750X-48U-L new sealed with up to a 3-year extended warranty, or certified refurbished with up to 1 year. Both conditions include 30-day returns; terms apply. Cisco's original Enhanced Limited Lifetime hardware warranty coverage ended October 31, 2021, when Cisco support ended.
WS-C3750X-48U-L includes LAN Base and supports Cisco IOS Software activation upgrades to IP Base or IP Services. For electronic upgrades, L-C3750X-48-L-S changes LAN Base to IP Base, while L-C3750X-48-L-E changes LAN Base to IP Services. Paper-license equivalents are C3750X-48-L-S and C3750X-48-L-E; the activated license controls the available feature set.
WS-C3750X-48U-L provides an 800W shared PoE budget with its standard C3KX-PWR-1100WAC supply, and UPOE ports support 60W allocations. Two C3KX-PWR-1100WAC supplies provide an 1800W budget, supporting 30 simultaneous 60W connections. The ports also support PoE and PoE+ endpoints; 48 powered ports do not mean 48 simultaneous maximum-power allocations.
WS-C3750X-48U-L supports C3KX-NM-1G for four 1G SFP uplinks, C3KX-NM-10G for two 10G SFP+ uplinks, and C3KX-NM-10GT for two 10G copper uplinks. No uplink module is included in the base configuration. C3KX-SM-10G requires IP Base or IP Services and is not supported by the supplied LAN Base feature set.
StackWise Plus stacks nine Catalyst 3750-X members with 64 Gbps stack throughput. LAN Base members can stack only with other Catalyst 3750-X LAN Base switches, not IP Base or IP Services members. CAB-STACK-50CM is included; CAB-STACK-1M= and CAB-STACK-3M= provide longer approved connections. StackPower uses separate cables and supports four directly interconnected switches.
No, WS-C3750X-48U-L does not include OSPF or BGP under its supplied LAN Base license; LAN Base supports 16 static routes. IP Base adds routed-access OSPF, while IP Services is required for full OSPF and BGPv4. Those capabilities require an activated feature upgrade rather than an uplink or power accessory.
WS-C3750X-48U-L supports 60W UPOE allocations, whereas WS-C3750X-48PF-L supports 30W PoE+ allocations. Both are discontinued 48-port Gigabit LAN Base models. Buyers maintaining UPOE-powered endpoints need the UPOE configuration; buyers maintaining a PoE+-only installation can use the lower per-port power class, subject to the shared budget.
WS-C3750X-48U-L includes LAN Base, while WS-C3750X-48U-S includes IP Base and routed-access OSPF. Both are discontinued UPOE configurations, but their feature sets cannot mix in a LAN Base stack. The L model suits an existing LAN Base estate; the S model suits maintenance of an existing IP Base configuration.
WS-C3750X-48U-L is a discontinued Catalyst 3750-X model whose Cisco support ended October 31, 2021; C9300-48U-E is the current 48-port UPOE migration endpoint. The original replacement, WS-C3850-48U-L, is also discontinued. The older model serves installed-estate maintenance, while C9300-48U-E serves buyers moving beyond the ended support lifecycle.
No, WS-C3750X-48U-L ships with one C3KX-PWR-1100WAC supply and a blank covering the second internal supply slot. A second supply is optional, so redundancy is not included as standard. Keep C3KX-PS-BLANK= fitted whenever the second supply is absent; operating with an uncovered supply slot disrupts the required chassis cooling arrangement.
Catalyst 3750-X LAN Base supports 255 VLANs, rather than the higher VLAN count available with IP Base. The selected switching template also changes MAC address allocation, with the VLAN template supporting 12000 entries. Size segmentation against the activated LAN Base limit instead of treating the chassis maximum as the supplied license entitlement.
WS-C3750X-48U-L consumes 129.48W at full traffic in the measured configuration with C3KX-NM-10G installed and no PoE loading. That figure excludes endpoint power and is not a fully loaded maximum. C3KX-PWR-1100WAC's 1100W rating describes the supply, not a published 1100W consumption figure for the complete switch.
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