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WS-C3850-12X48U-E
Cisco WS-C3850-12X48U-E Catalyst 3850 48-Port Multigigabit P...
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WS-C3850-12X48U-E provides twelve multigigabit copper ports alongside thirty-six Gigabit Ethernet ports in a managed Layer 3 access switch. All 48 downlinks support Cisco UPOE for powered endpoints such as IP phones, access points, and VDI clients. The Catalyst 3850 uses a 1U rack chassis for enterprise campus access, with IP Services included for advanced routing. Uplink connectivity uses an empty modular bay rather than fixed fiber ports, allowing separately selected uplink hardware. The Cisco Catalyst 3850 Series combines wired access and hardware forwarding in the same system. The discontinued WS-C3850-48U-E supplies 800W of single-supply PoE power, a different allocation that must not be assumed for this 48-port multigigabit UPOE switch. Specify the endpoint speed mix rather than treating every copper connection as multigigabit.
WS-C3850-12X48U-E price for new stock is $1,021.65, a 78.4% saving from the Cisco list price of $4,730.00. WS-C3850-12X48U-E refurb price is $365.30. WS-C3850-12X48U-E is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for WS-C3850-12X48U-E for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
472 Gbps switching capacity carries traffic between access interfaces and selected uplink hardware. 460 Mpps forwarding with 64-byte packets identifies the packet-processing rate, separate from stacking bandwidth. 630W of shared PoE power requires aggregate endpoint sizing; two PWR-C1-1100WAC supplies increase the available allocation to 1730W. OSPF, EIGRP, BGPv4, and IS-ISv4 enable advanced routing, while PIM-SM and PIM-DM handle multicast. WS-C3850-12X48U-E uses 4 GB DRAM and 2 GB flash for operating software and stored configuration. IPv4 capacity combines 24000 ARP and learned-route entries, so planning must account for both entry types. The UADP ASIC provides hardware QoS with eight egress queues per wired port for traffic scheduling. 208.1W consumption at full traffic with C3850-NM-8-10G excludes PoE loads and is not a fully powered chassis maximum. 100G uplinks are unavailable; C3850-NM-2-40G provides the fastest uplink option through two 40G connections.
Specify WS-C3850-12X48U-E in new sealed or certified refurbished condition, with quantities and accessory requirements itemized on the purchase order. Certified refurbished units are inspected and bench-tested; every powered port has PoE output verified under load, firmware is verified, and configuration is wiped to factory default. New units include up to a 3-year extended warranty, certified refurbished units up to 1 year, and both conditions have 30-day returns, terms apply; Cisco's Enhanced Limited Lifetime Warranty and service ended October 31, 2025. POs are accepted for enterprise and volume orders, with Net-30 for government and RMA with advance replacement.
| Key Specs | Key Spec Values |
|---|---|
License Tier | IP Services |
Port Configuration | 36x1G UPOE / 12x100M-10G UPOE / modular uplinks |
PoE Budget | 630W single / 1730W dual PWR-C1-1100WAC |
Stacking | StackWise-480 / 9 members / 480 Gbps |
Lifecycle Status | Cisco support ended October 31, 2025 |
Replacement PID | C9300-48UXM-A |
In a large university campus supporting 802.11ax APs, IT teams deploy the WS-C3850-12X48U-E to deliver 12 mGig ports and 36 Gig ports with UPoE, aggregating high-throughput wireless traffic. The integrated IP Services feature set ensures seamless QoS, Layer 3 routing and advanced security, resulting in 40% faster wireless connections and simplified network management.
A corporate high-rise integrates smart lighting, environmental sensors and 4K digital signage on every floor. The Catalyst 3850 48-port UPoE switch powers all PoE-Class 6 devices from a single chassis while isolating VLANs via advanced IP Services, reducing cabling complexity by 50% and lowering operations costs through centralized PoE budgeting and real-time device monitoring.
In a virtualized data center, the WS-C3850-12X48U-E sits at the rack edge to aggregate server and firewall connections with StackWise-480 redundancy. Leveraging IP Services features like OSPF, BGP and multicast routing, it delivers high availability and deterministic performance, boosting application uptime to 99.99% and simplifying multi-site network orchestration.
When extending an installed access stack, standardize member feature sets rather than mixing LAN Base with IP Services. Stack links require STACK-T1-50CM=, STACK-T1-1M=, or STACK-T1-3M= cables, distinct from power-sharing connections. Specify the required cable lengths and matching software level on the purchase order before adding another chassis.
When reproducing a campus routing configuration in staging, define the interface scope before reserving hardware. The switch supports 1000 switched virtual interfaces, so the proposed configuration needs an explicit interface and subnet plan. Include the intended configuration scope and compatibility checks in the order before assembling the test environment.
When maintaining replacement stock for installed access switches, include C3850-RAC-KIT= mounting hardware in the receiving checklist rather than treating a bare chassis as installation-ready. ORM supports regional stock and RMA across the UK, EU, US, and MEA. Specify unit condition, mounting contents, and regional RMA requirements before the purchase order.
Ongoing Cisco manufacturer support
Cisco service for WS-C3850-12X48U-E ended October 31, 2025. C9300-48UXM-A is the replacement when ongoing manufacturer service is a purchasing requirement.
Multigigabit connections on every access port
WS-C3850-12X48U-E has twelve multigigabit ports; the remaining thirty-six stop at 1G. C9300-48UXM-A raises those thirty-six ports to 2.5G while retaining 48-port density.
Simultaneous 60W output on every port
A 48-port allocation at 60W per port requires 2880W. Two PWR-C1-1100WAC supplies provide a 1730W PoE budget, below simultaneous maximum UPOE output across every port.
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| WS-C3850-12X48U-E |  WS-C3850-24UW-S |  WS-C3850-24XUW-S |  WS-C3850-24XU-L | |
|---|---|---|---|---|
| Depth | 488 mm | 488 mm | 488 mm | 488 mm |
| Ethernet Technology | Multi-Gigabit (2.5G/5G) | Gigabit Ethernet | Multi-Gigabit (2.5G/5G) | Multi-Gigabit (2.5G/5G) |
| Flash Memory | 2 GB | 2 GB | 2 GB | 2 GB |
| Form Factor | 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 |
| Manufacturer Part Number | WS-C3850-12X48U-E | WS-C3850-24UW-S | WS-C3850-24XUW-S | WS-C3850-24XU-L |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB |
| Power Consumption | 208.1W excluding PoE at full traffic with C3850-NM-8-10G | 84.8W (excluding PoE / C3850-NM-2-10G installed / 100% traffic) | 248.1W (100% traffic / C3850-NM-8-10G installed / no PoE load) | 248.1W (100% traffic / no PoE load / C3850-NM-8-10G installed) |
| Switching Capacity | 472 Gbps | 92 Gbps | 640 Gbps | 640 Gbps |
| Weight | 8 kg | 7.5 kg | 8 kg. | 8 kg |
| Width | 445 mm | 445 mm | 445 mm | 445 mm |
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Reviewed on the 17 June 2025
Smooth activation with reliable daily performance.
Reviewed on the 20 May 2024
Cisco reliability with advanced features.
Reviewed on the 12 June 2017
Well-suited for modern enterprise access.
Reviewed on the 24 March 2022
UPoE and IP Services improved access-layer flexibility.
Reviewed on the 9 May 2017
Handled power-hungry devices without issues.
WS-C3850-12X48U-E identifies a Catalyst 3850 switch: WS-C3850 is the family prefix, 12X denotes twelve multigigabit ports, 48 denotes total access-port count, U denotes UPOE, and E denotes IP Services. The twelve multigigabit ports support 100Mbps through 10Gbps; the remaining thirty-six access ports support Gigabit Ethernet.
WS-C3850-12X48U-E supports console CLI, remote CLI over SSH or Telnet, SNMP, Cisco Prime Infrastructure, and Cisco DNA Center management with appropriate add-on licensing. Cisco IOS XE supplies the management software. SSH and SNMPv3 require a cryptographic software image; specify the intended management path before ordering the hardware.
WS-C3850-12X48U-E is discontinued: sales ended October 30, 2020, and Cisco support ended October 31, 2025. Software maintenance ended October 30, 2021, while vulnerability support continued through October 31, 2025. C9300-48UXM-A is the replacement, retaining 48 access ports while extending thirty-six copper connections from Gigabit Ethernet to 2.5Gbps.
New sealed and certified refurbished WS-C3850-12X48U-E units are offered by ORM. New orders include up to a 3-year extended warranty; certified refurbished orders include up to 1 year. Returns are available for 30 days on every condition, terms apply. Cisco's Enhanced Limited Lifetime Warranty and service ended October 31, 2025.
IP Services is the perpetual base license on WS-C3850-12X48U-E. Optional Cisco DNA Essentials, Cisco DNA Advantage, and Cisco DNA Premier paths have three-year minimum terms; Cisco ONE packaging was also offered. Base routing needs no subscription. Verify Smart Account entitlements separately; expired add-ons require renewal or deactivation and a reload.
630W is the shared UPOE budget for WS-C3850-12X48U-E with one PWR-C1-1100WAC supply. Two PWR-C1-1100WAC supplies raise that budget to 1730W. Cisco UPOE supports 60W per port, but aggregate endpoint demand must remain within the selected power budget. Specify endpoint draw and supply quantity rather than assuming simultaneous maximum power on every port.
WS-C3850-12X48U-E has no installed uplink module in the base configuration. Compatible options are C3850-NM-4-1G, C3850-NM-2-10G, C3850-NM-4-10G, C3850-NM-8-10G, and C3850-NM-2-40G. C3850-NM-2-40G provides two 40G links, while C3850-NM-8-10G provides eight 10G links. Specify the selected module and compatible optics separately from the chassis on the purchase order.
Nine Catalyst 3850 switches can form a StackWise-480 stack with 480 Gbps stacking bandwidth. Members must use matching feature sets; a LAN Base member cannot join an IP Services stack in that configuration. Cable choices are STACK-T1-50CM=, STACK-T1-1M=, and STACK-T1-3M=; select lengths for the installed chassis layout.
Yes, WS-C3850-12X48U-E runs IP Services with full OSPF, EIGRP, BGPv4, and IS-ISv4, plus OSPFv3 and EIGRPv6 for IPv6 routing. PIM-SM, PIM-DM, and VRF-Lite are also supported. IPv4 capacity is 24000 combined ARP and learned-route entries, not an independent allowance of 24000 learned routes in addition to ARP entries.
WS-C3850-12X48U-E ships with one PWR-C1-1100WAC supply and an empty second power-supply bay, so redundancy requires another supply. StackPower can share power among four directly interconnected members using CAB-SPWR-30CM= or CAB-SPWR-150CM= cables. StackPower links are separate from StackWise-480 data links and require their own purchase-order line items.
WS-C3850-12X48U-E provides 630W of single-supply PoE power, whereas WS-C3850-48U-E provides 800W. Both models are discontinued. Existing fleets with larger powered endpoint totals need the higher budget; deployments using WS-C3850-12X48U-E must size aggregate endpoint demand against the smaller available allocation rather than assuming the two configurations have interchangeable power budgets.
WS-C3850-12X48U-E includes IP Services, while WS-C3850-12X48U-S includes IP Base. Both models are discontinued. IP Services enables full OSPF, EIGRP, BGPv4, and IS-ISv4, whereas IP Base provides entry-level routed access. The E configuration suits advanced routing requirements; the S configuration suits existing installations using the more limited IP Base feature set.
C9300-48UXM-A extends thirty-six access ports to 2.5Gbps, whereas those ports on WS-C3850-12X48U-E stop at Gigabit Ethernet. Both configurations retain 48 access ports, including twelve multigigabit connections. The discontinued WS-C3850-12X48U-E fits like-for-like installed hardware requirements; C9300-48UXM-A is the replacement for purchases needing higher speeds across the remaining copper ports.
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