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WS-C3850-12X48U-S
Cisco WS-C3850-12X48U-S Catalyst 3850 48-Port Multigigabit U...
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WS-C3850-12X48U-S combines 12 Multigigabit downlinks with 36 Gigabit Ethernet downlinks in a managed Layer 3 enterprise access switch. The Multigigabit interfaces negotiate 100Mbps, 1G, 2.5G, 5G or 10G, while the remaining copper interfaces support 10/100/1000Mbps. Cisco UPOE provides a per-port ceiling of 60W for compatible powered endpoints, subject to the shared power allocation. Its modular uplink bay accepts SFP, SFP+ or QSFP+ network modules; no uplink module is installed in the base configuration. The rack-mounted 1U Catalyst 3850 includes the IP Base feature set for routed access. Compared with the discontinued WS-C3850-48F-S, which supplies PoE+ at 30W per port, this 48-port UPOE access switch accommodates higher-draw endpoints alongside phones and wireless access points.
WS-C3850-12X48U-S price for new stock is $2,047.50. WS-C3850-12X48U-S refurb price is $257.23. WS-C3850-12X48U-S is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for WS-C3850-12X48U-S for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
472 Gbps switching capacity supports local traffic forwarding, while 460 Mpps describes forwarding with 64-byte packets. 630W of shared PoE power is available with the supplied PWR-C1-1100WAC; a second PWR-C1-1100WAC raises the available budget to 1730W without removing aggregate allocation limits. OSPF for routed access, EIGRP Stub, RIPv1, RIPv2, RIPng and static routing support IP Base deployments, with PBR available for traffic-policy decisions. Full BGPv4, IS-ISv4 and PIM routing require IP Services rather than the included tier. WS-C3850-12X48U-S uses UADP forwarding silicon with 4 GB DRAM and 2 GB flash. The hardware supports 32000 MAC entries and 24000 total IPv4 routes, including ARP entries and learned routes. LACP supports aggregated Ethernet links, and Embedded Event Manager provides event-driven automation. Three modular fans provide chassis cooling. 208.1W consumption at full traffic excludes PoE loading, so that measurement is not the electrical requirement for a fully powered endpoint installation.
New sealed and certified refurbished WS-C3850-12X48U-S units are offered with up to a 3-year extended warranty on new hardware, up to 1 year on certified refurbished hardware, and 30-day returns on every condition; terms apply. Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed links on every port, clean boot, PoE output under load on every powered port, module bay recognition, stack adapter negotiation, PSU status and fan status; firmware is verified and configurations are wiped to factory default. Specify condition, quantities and accessories on the PO; Cisco's Enhanced Limited Lifetime Warranty service ended October 31, 2025. PO accepted, Net-30 for government, RMA with advance replacement, and regional stock/RMA across UK, EU, US and MEA support enterprise and volume orders.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS XE |
License Tier | IP Base |
Port Configuration | 36 x 1G UPOE / 12 x Multigigabit UPOE / modular uplinks |
PoE Budget | 630W single supply / 1730W dual supply |
Lifecycle Status | End of sale October 30, 2020 / support ended October 31, 2025 |
Replacement PID | C9300-48UXM-A. |
In a design firm requiring ultra-high bandwidth for 4K CAD workstations and HD video conferencing, the WS-C3850-12X48U-S Cisco Catalyst 3850 (12 mGig + 36 Gig) UPoE IP Base switch provides converged multi-gigabit connectivity and power over Ethernet. Integrated Layer 3 routing and advanced QoS ensure deterministic performance and low latency for critical applications. Outcome: 50% latency reduction, 30% faster large-file transfers, and 25% fewer network devices.
A university deploying 200+ Wi-Fi 6 access points requires centralized PoE and high-throughput aggregation. The WS-C3850-12X48U-S Cisco Catalyst 3850 (12 mGig + 36 Gig) UPoE IP Base switch handles multi-gigabit wireless backhaul while delivering up to 60 W per port for advanced APs. Outcome: 40% improvement in overall Wi-Fi performance, seamless roaming for 10,000+ clients, and simplified stackable management across five buildings.
A manufacturing plant implementing HD PTZ cameras and sensor-driven IoT devices needs reliable power and bandwidth at the network edge. The WS-C3850-12X48U-S Cisco Catalyst 3850 (12 mGig + 36 Gig) UPoE IP Base switch supplies 60 W UPoE and enforces granular Layer 3 segmentation for secure device connectivity. Outcome: 25% reduction in cabling infrastructure costs, zero packet loss in real-time analytics, and centralized policy enforcement.
When expanding an existing Catalyst 3850 stack, the installed software feature sets determine membership compatibility: LAN Base cannot mix with IP Base or IP Services. Select STACK-T1-50CM=, STACK-T1-1M= or STACK-T1-3M= for the physical spacing, and confirm matching feature sets before specifying the additional member and cable quantities.
When retaining Catalyst 3850 hardware for an SD-Access deployment, IP Base combined with Cisco DNA Advantage limits the switch to three virtual networks. An IP Services base removes that particular restriction. Count the required segments and verify the base-license entitlement before specifying software changes on the purchase order.
When preparing switches for a controlled lab or staging environment, SSH and cryptographic SNMPv3 require the cryptographic software image. Console access supports initial configuration before remote administration is enabled. Include image verification and administrator-access testing in the staging acceptance criteria, and specify the required condition before issuing the hardware purchase order.
Active Cisco hardware support
Cisco support for WS-C3850-12X48U-S ended October 31, 2025. C9300-48UXM-A is the named replacement for procurement requiring a continuing Cisco hardware support path.
2.5G access on every port
Only 12 access ports support Multigigabit speeds; the other 36 stop at 1G. C9300-48UXM-A retains 48 ports while providing 2.5G capability on those 36 interfaces.
Full routing with the included license
IP Base includes routed-access OSPF and EIGRP Stub, not full BGPv4, IS-ISv4 or PIM routing. Those functions require an IP Services feature set rather than the included license.
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| WS-C3850-12X48U-S |  WS-C3850-48UW-S |  WS-C3850-48T-E |  WS-C3850-48PW-S | |
|---|---|---|---|---|
| Depth | 488 mm | 488 mm | 450 mm | 488 mm |
| Ethernet Technology | Multi-Gigabit (2.5G/5G) | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| 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-S | WS-C3850-48UW-S | WS-C3850-48T-E | WS-C3850-48PW-S |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB |
| Switching Capacity | 472 Gbps | 176 Gbps | 176 Gbps | 176 Gbps |
| Weight | 8 kg. | 8 kg | 7.7 kg | 8 kg |
| Width | 445 mm | 445 mm | 445 mm | 445 mm |
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New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 90 days, for dependable protection on every order. The exact term is confirmed on your quote, order confirmation and invoice.
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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 25 June 2025
Cisco Catalyst delivered predictable uptime.
Reviewed on the 5 March 2022
Strong power and connectivity options.
Reviewed on the 9 December 2022
mGig and UPoE combination powered high-demand endpoints reliably.
Reviewed on the 16 October 2018
LAN Base performance was stable under load.
Reviewed on the 22 October 2018
Excellent access-layer switch for modern offices.
WS-C3850-12X48U-S identifies a Catalyst 3850 with 48 copper ports, 12 Multigigabit ports, Cisco UPOE and IP Base. WS-C3850 names the stackable family; 12X denotes the Multigigabit subset, 48 the total port count, U the powered-port class, and S the IP Base feature set.
WS-C3850-12X48U-S supports CLI administration through console, SSH or Telnet, SNMP monitoring, and Cisco Prime Infrastructure management. Cisco DNA Center provides additional management functions with the applicable DNA package. SSH and cryptographic SNMPv3 require the cryptographic software image, so remote-management requirements should be included in staging acceptance checks.
Yes, WS-C3850-12X48U-S is discontinued: Cisco end of sale was October 30, 2020, and the last date of support was October 31, 2025. Cisco service has ended for this hardware. C9300-48UXM-A is the named replacement, rather than another Catalyst 3850 variant.
ORM Systems offers WS-C3850-12X48U-S new sealed with up to a 3-year extended warranty, or certified refurbished with up to 1 year. Every condition has 30-day returns; terms apply. Cisco's Enhanced Limited Lifetime Warranty no longer provides service for this discontinued hardware because Cisco support ended October 31, 2025.
WS-C3850-12X48U-S includes perpetual IP Base, with IP Services available as a feature-set upgrade through RTU activation. Optional Cisco DNA Essentials, Cisco DNA Advantage and Cisco DNA Premier subscriptions were offered with minimum three-year terms. Smart Accounts manage add-ons; expired add-ons require renewal or deactivation and a reload to retain base functionality.
WS-C3850-12X48U-S provides a shared 630W PoE budget with one PWR-C1-1100WAC, or 1730W with two PWR-C1-1100WAC supplies. Cisco UPOE supports up to 60W per compatible port, but the aggregate budget prevents all 48 ports from drawing that maximum simultaneously. Endpoint allocations must fit the installed supply configuration.
WS-C3850-12X48U-S accepts C3850-NM-4-1G, C3850-NM-2-10G, C3850-NM-4-10G, C3850-NM-8-10G and C3850-NM-2-40G uplink modules. The base switch does not include a network module. The last two options provide eight 10G interfaces or two 40G interfaces respectively, so the purchase order must identify the required module rather than assuming fixed uplink ports.
Catalyst 3850 StackWise-480 stacks nine members with 480 Gbps stacking bandwidth. STACK-T1-50CM=, STACK-T1-1M= and STACK-T1-3M= provide the stacking cable options. LAN Base cannot mix with IP Base or IP Services. StackPower is a separate power-sharing connection using CAB-SPWR-30CM= or CAB-SPWR-150CM=, with four directly connected power-stack members.
Yes, the Catalyst 3850 IP Base model supports Layer 3 routing through static routes, RIPv1, RIPv2, RIPng, EIGRP Stub and OSPF for routed access, plus PBR. Full OSPF, full EIGRP, BGPv4, IS-ISv4 and PIM require IP Services. Hardware route capacity does not remove those feature-set restrictions.
No, WS-C3850-12X48U-S ships with one PWR-C1-1100WAC and an available second supply bay. A second PWR-C1-1100WAC is an additional purchase, not a standard included component. The supplied AC configuration uses 115-240V input; supply quantity also changes the available endpoint power budget and must be specified separately.
The 48-port Multigigabit UPOE switch occupies 1U and measures 44.5 mm high, 445 mm wide and 488 mm deep. Its shipped weight is 8 kg without an uplink module. C3850-RAC-KIT= provides the rack-mount accessory option, while C3850-4PT-KIT= supplies extension rails and brackets for four-point mounting.
WS-C3850-12X48U-S supports Cisco UPOE at up to 60W per port, whereas WS-C3850-48F-S supports PoE+ at up to 30W per port. Both models are discontinued. The UPOE model addresses higher-draw compatible endpoints; the PoE+ model addresses existing deployments whose powered devices remain within the lower per-port limit.
WS-C3850-12X48U-S includes IP Base, while WS-C3850-12X48U-E includes IP Services on the same copper-port configuration. IP Services adds full OSPF, EIGRP, BGPv4, IS-ISv4 and PIM routing. Both are discontinued; the IP Base variant suits routed-access requirements, while the IP Services variant addresses broader routing requirements in existing installations.
C9300-48UXM-A provides 36 ports with 2.5G capability where WS-C3850-12X48U-S provides 36 Gigabit ports; both retain a 12-port Multigigabit subset and 48 total access ports. The discontinued Catalyst 3850 suits matching legacy hardware, while its named replacement addresses purchases requiring faster connectivity across the remaining access-port group.
WS-C3850-12X48U-S consumes no more than 208.1W at 100% traffic in the standalone measurement with no PoE loading and 115V AC input. The corresponding idle figure is 191.3W. These figures exclude powered endpoints and must not be treated as the maximum draw of a populated PoE installation.
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