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WS-C3850-12X48U-L
Cisco WS-C3850-12X48U-L Catalyst 3850 48-Port UPOE Switch, 1...
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WS-C3850-12X48U-L combines twelve multigigabit copper downlinks with thirty-six Gigabit Ethernet downlinks in a managed, 48-port Cisco UPOE access switch. The multigigabit interfaces negotiate 100Mbps, 1G, 2.5G, 5G or 10G connections, allowing selected higher-bandwidth endpoints to connect alongside conventional Gigabit devices. Uplinks are modular rather than fixed: the base chassis has an unpopulated network-module bay supporting optional 1G, 10G or 40G interfaces. The Rack-Mount 1U chassis belongs to the Catalyst 3850 family and carries LAN Base software, giving the as-shipped configuration Layer 2 switching with limited static routing. The discontinued WS-C3850-12X48U-S sibling carries IP Base instead. This mixed-speed configuration serves enterprise access requirements involving powered endpoints without making every copper downlink multigigabit.
WS-C3850-12X48U-L price for new stock is $1,545.60, a 87.6% saving from the Cisco list price of $12,500.00. WS-C3850-12X48U-L refurb price is $203.70. WS-C3850-12X48U-L is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3850-12X48U-L for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
472 Gbps maximum switching capacity accommodates the access interfaces and supported high-speed uplink options. 460 Mpps forwarding at 64-byte packet size provides the packet-processing reference for traffic planning. 630W of shared PoE capacity requires aggregate endpoint requests to be allocated against the installed PWR-C1-1100WAC. Static routing supports 16 user-configured entries under the supplied license; OSPF, EIGRP and BGPv4 are not included in that tier. WS-C3850-12X48U-L provides 4 GB of DRAM for control-plane operation and 2 GB of flash for local software storage. The MAC table accommodates 32000 entries for endpoint learning. Administrative access includes console connections, a web UI and remote CLI services, while SNMP supports monitoring integration. AES-256 MACsec provides link encryption on the multigigabit hardware. Three fans provide active cooling, so this configuration does not offer fanless operation. The 202030-hour MTBF is a reliability-planning figure, not a guaranteed service life.
ORM Systems offers WS-C3850-12X48U-L new sealed or certified refurbished, with up to a 3-year extended warranty for new units, up to 1 year for certified refurbished units and 30-day returns on every condition, terms apply; Cisco's Enhanced Limited Lifetime Warranty ended October 31, 2025. Certified refurbished units are inspected and bench-tested, with PoE output verified under load on every powered port, firmware verified and configuration wiped to factory default. Specify condition, quantity and required accessories on the purchase order. Enterprise and volume orders accept POs, Net-30 for government and RMA with advance replacement, with regional stock and RMA coverage in the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
License Tier | LAN Base |
Port Configuration | 36 x 1G UPOE / 12 x Multigigabit UPOE |
PoE Budget | 630W single PWR-C1-1100WAC / 1730W dual PWR-C1-1100WAC |
Stacking | StackWise-480 / Eight members of this model |
Lifecycle Status | Cisco support ended October 31, 2025 |
Replacement PID | C9300-48UXM-E |
In a large university environment, the WS-C3850-12X48U-L (12 mGig + 36 Gig) UPoE LAN Base switch powers and aggregates high-density Wi-Fi 6 access points, IP cameras and environmental sensors over a single infrastructure. Outcome: Simplified cabling, scalable multi-gig backhaul and PoE++ power delivery reduce deployment time by 30%, improve wireless performance and enable real-time analytics across 200+ buildings.
A regional financial services branch leverages the WS-C3850-12X48U-L Cisco Catalyst 3850 switch to deliver secure VoIP phones, HD video conferencing and guest Wi-Fi from one chassis. Outcome: Integrated QoS, VLAN segmentation and UPoE cut hardware footprint by 40%, guarantee sub-5 ms latency for voice/video and simplify management via Cisco DNA Center.
On a manufacturing production line, the 12 mGig + 36 Gig Catalyst 3850 UPoE LAN Base switch powers PLC controllers, HMIs, AGVs and safety sensors, while providing low-latency SFP+ uplinks and network segmentation. Outcome: Zero packet loss under 1 ms forwarding, centralized power management and robust resiliency ensure 24/7 uptime and boost assembly efficiency by 25%.
An endpoint purchase specifying Cisco UPOE must account for the 60W per-port ceiling rather than treating the shared power pool as unlimited. Device quantities and individual power requests need reconciliation before equipment is committed. Specify each endpoint's required power mode and review simultaneous demand before issuing the PO.
An existing data stack containing multigigabit members needs an ASIC-count check before another chassis is added. This hardware uses four ASICs, and the combined stack cannot exceed 32 ASICs. Inventory the installed models, count their ASICs, and specify the additional member only after confirming the resulting stack remains within that ceiling.
A staging purchase used to reproduce an existing access configuration should check VLAN usage before hardware selection. LAN Base supports 255 VLANs, so an exported configuration with greater VLAN requirements cannot be reproduced unchanged under that feature set. Count the required VLANs and specify the licensed configuration before issuing the PO.
Active Cisco hardware service
Cisco service for this switch ended October 31, 2025. C9300-48UXM-E is the named replacement for purchases requiring a supported migration model rather than discontinued hardware.
Multigigabit access across all ports
Only 12 downlinks exceed 1G on this model. C9300-48UXM-E provides 36 2.5G ports plus 12 multigigabit ports while retaining the same 48-port density.
OSPF or BGP routing as shipped
LAN Base supports limited static routing, not OSPF or BGPv4. Dynamic routing requires a different license tier; the as-shipped license cannot satisfy that requirement.
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| WS-C3850-12X48U-L |  WS-C3850-48PW-S |  WS-C3850-24U-S |  WS-C3850-24UW-S |  WS-C3850-24S-E | |
|---|---|---|---|---|---|
| Depth | 488 mm | 488 mm | 488 mm | 488 mm | 450 mm |
| Ethernet Technology | Multi-Gigabit (2.5G/5G) | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 2 GB | 2 GB | 2 GB | 2 GB | 2 GB |
| 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-C3850-12X48U-L | WS-C3850-48PW-S | WS-C3850-24U-S | WS-C3850-24UW-S | WS-C3850-24S-E |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB | 4 GB |
| Switching Capacity | 472 Gbps | 176 Gbps | 92 Gbps | 92 Gbps | 92 Gbps |
| Weight | 8 kg | 8 kg | 7.5 kg. | 7.5 kg | 7.03 kg |
| Width | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm |
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Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
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Reviewed on the 17 July 2021
UPoE and mGig supported diverse powered devices efficiently.
Reviewed on the 12 May 2023
LAN Base features were sufficient for our access needs.
Reviewed on the 10 August 2024
Stable operation with strong power delivery.
Reviewed on the 6 November 2023
Cisco hardware quality met expectations.
Reviewed on the 24 July 2021
Good solution for mixed-speed access networks.
WS-C3850-12X48U-L identifies a Catalyst 3850 switch with 48 access ports, including 12 multigigabit ports, Cisco UPOE and LAN Base software. WS-C3850 is the platform prefix, 12X denotes the multigigabit subset, 48 is the total port count, U denotes UPOE, and L denotes LAN Base.
The Cisco Catalyst 3850 supports a built-in web UI, CLI through RJ-45 or USB console connections, remote CLI over SSH or Telnet, SNMP monitoring and Cisco Prime Infrastructure management. Remote access requires a management address and enabled services. SSH requires the appropriate cryptographic software image.
WS-C3850-12X48U-L provides 630W of PoE capacity with its standard PWR-C1-1100WAC; adding a second PWR-C1-1100WAC raises the budget to 1730W. The budget is shared across powered endpoints. Cisco UPOE's 60W per-port capability does not guarantee maximum power on every port simultaneously, so size supplies against concurrent endpoint demand.
WS-C3850-12X48U-L accepts C3850-NM-4-1G, C3850-NM-2-10G, C3850-NM-4-10G, C3850-NM-8-10G and C3850-NM-2-40G uplink modules. Options range from four 1G interfaces to eight 10G interfaces or two 40G interfaces. The base chassis contains an empty module bay, so specify the required module and compatible optics when ordering the switch.
WS-C3850-12X48U-L supports StackWise-480 with eight members of this model and 480 Gbps stack bandwidth. Each chassis uses four ASICs, and the combined stack is limited to 32 ASICs. Members must run matching license levels; select STACK-T1-50CM=, STACK-T1-1M= or STACK-T1-3M= for the required cable length.
WS-C3850-12X48U-L supports 16 user-configured static routes under LAN Base, not OSPF, EIGRP or BGPv4. The 24000-entry hardware total includes ARP plus learned routes and is distinct from the license limit. IP Base adds entry-level routed access, while IP Services enables the full advanced-routing feature set.
WS-C3850-12X48U-L includes permanent LAN Base; optional Cisco DNA Essentials or Cisco DNA Advantage add-ons have a minimum three-year term. DNA Essentials works with LAN Base, whereas DNA Advantage requires IP Base or IP Services. Base upgrades require separate entitlements, and subscription expiry does not change the permanent base license. Manage add-on terms through a Smart Account.
WS-C3850-12X48U-L is discontinued, with end-of-sale on October 30, 2020 and Cisco support ending October 31, 2025. C9300-48UXM-E is the named replacement. New sealed inventory and refurbished orders for the original model do not restart those milestones or make the switch eligible for renewed Cisco service.
ORM Systems offers WS-C3850-12X48U-L new sealed or certified refurbished, with up to a 3-year extended warranty for new units and up to 1 year for refurbished units. Cisco's Enhanced Limited Lifetime Warranty ended October 31, 2025. Both conditions include 30-day returns, terms apply. Refurbished units are inspected and bench-tested, with firmware verified and configuration wiped to factory default.
WS-C3850-48U-L provides an 800W standard PoE budget, whereas WS-C3850-12X48U-L provides 630W. Both models are discontinued. For legacy replacement planning, the first accommodates greater aggregate endpoint power requests within its standard supply configuration, while the second requires tighter allocation of its smaller standard power pool.
WS-C3850-12X48U-S carries IP Base, while WS-C3850-12X48U-L carries LAN Base. IP Base adds entry-level Layer 3 services and OSPF for routed access; LAN Base limits routing to static entries. Both models are discontinued. LAN Base matches Layer 2-focused legacy configurations, while IP Base matches legacy routed-access requirements.
C9300-48UXM-E raises the 36 standard copper downlinks to 2.5G, whereas WS-C3850-12X48U-L has 36 standard 1G downlinks; both retain 12 multigigabit ports. The original model is discontinued. The older configuration matches existing 1G endpoint requirements, while the replacement addresses purchases requiring 2.5G access across the remaining copper ports.
WS-C3850-12X48U-L ships with one PWR-C1-1100WAC and has a second internal bay for an optional PWR-C1-1100WAC. Redundancy is optional rather than included as a pair of supplies. This model requires a primary source rated at least 470W; PWR-C1-350WAC and PWR-C1-440WDC are restricted to secondary roles.
WS-C3850-12X48U-L draws a maximum 208.1W under the 100%-traffic IMIX test with C3850-NM-8-10G installed, 115V AC input and no PoE load. This is not total consumption with powered endpoints attached. The PWR-C1-1100WAC output rating must not be substituted for measured switch consumption or total UPS load.
WS-C3850-12X48U-L is a 1U rack-mount switch measuring 445 mm wide, 488 mm deep and 44.5 mm high, with an as-shipped weight of 8 kg. That weight includes the chassis, fans and one PWR-C1-1100WAC but excludes an optional uplink module. Check rack depth and rear cable clearance before ordering.
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