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WS-C3850-48U-S
Cisco WS-C3850-48U-S Catalyst 3850 48-Port Gigabit UPOE Swit...
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WS-C3850-48U-S provides 48 Gigabit Ethernet access ports with Cisco UPOE for endpoints requiring more power than PoE+ supplies. This managed Layer 3 switch ships with IP Base in a rack-mount 1U chassis and uses a modular uplink bay rather than built-in fiber uplinks. The base configuration does not include an uplink module, so the purchase order must specify the required connectivity. The Cisco Catalyst 3850 Series serves enterprise access networks connecting wired clients, phones and wireless access points. The discontinued WS-C3850-48F-S provides PoE+ instead of UPOE, making endpoint power requirements the distinction between these otherwise comparable access configurations. UPOE describes Cisco's endpoint-power implementation; it should not be treated as an assurance of compatibility with every higher-power device.
WS-C3850-48U-S price for new stock is $3,958.50. WS-C3850-48U-S refurb price is $157.87. WS-C3850-48U-S is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for WS-C3850-48U-S for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
176 Gbps switching capacity supports the 48-port Gigabit configuration's aggregate switching workload. 800W of shared endpoint power is available with the standard PWR-C1-1100WAC; adding a second PWR-C1-1100WAC increases the available PoE budget to 1900W. Static routing, RIPv1, RIPv2, RIPng, EIGRP Stub and OSPF for routed access provide the IP Base routing options; full OSPF, full EIGRP, BGPv4 and IS-ISv4 require IP Services. WS-C3850-48U-S includes 4 GB of DRAM and 2 GB of flash for software operation and storage. The Catalyst 3850 supports 32000 MAC addresses and a platform total of 24000 IPv4 routes, including ARP and learned routes, rather than that total representing an OSPF license allowance. UADP handles forwarding and hardware-based QoS, while MSTP and PVRST+ support spanning-tree operation. A 127.7W traffic-test maximum excludes PoE loading and includes C3850-NM-4-10G, so electrical sizing must also account for powered endpoints.
WS-C3850-48U-S is offered new sealed or certified refurbished; 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. ORM provides up to a 3-year extended warranty for new orders and up to 1 year for certified refurbished orders, plus 30-day returns on both conditions; terms apply, and Cisco warranty coverage ended October 31, 2025. Specify the condition, accessory PIDs and quantities before ordering this switch. For enterprise and volume purchases, PO is accepted, Net-30 is available for government, and RMA includes advance replacement, with regional stock and RMA in the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS XE |
License Tier | IP Base |
Port Configuration | 48 x 1G UPOE, modular 1G or 10G uplinks |
PoE Budget | 800W standard / 1900W with two PWR-C1-1100WAC. |
Lifecycle Status | Cisco support ended October 31, 2025. |
Replacement PID | C9300-48U-A. |
A large university deploys 250 Cisco Catalyst 9105 Wi-Fi 6 access points across five buildings. A stack of four WS-C3850-48U-S switches delivers 696W of 802.3bt UPoE per unit, consolidating power and data on a single platform. Outcome: seamless roaming, 40% higher wireless throughput, simplified VLAN segmentation and centralized management via Cisco IOS XE.
A 500-seat corporate headquarters integrates Cisco IP Phones, video conferencing endpoints and Wi-Fi handsets. Two WS-C3850-48U-S switches supply up to 60W per port, eliminate separate power injectors and free up rack space. Outcome: reliable 100% PoE uptime, streamlined provisioning with Cisco DNA Center, and a 30% reduction in deployment time.
A modern hospital converges 120 IP cameras, card-access readers and environmental sensors onto its network backbone. A pair of WS-C3850-48U-S switches powers all devices via UPoE, segments traffic with robust QoS and secures data with MAC-based access control. Outcome: consolidated cabling, 25% lower power draw, real-time monitoring and rapid fault isolation.
An installed WS-C3750X-48U-S estate being maintained after its October 30, 2016 end of sale has WS-C3850-48U-S as its corresponding legacy replacement. Both configurations provide UPOE with IP Base, but the replacement is also discontinued. Establish whether the purchase supports a maintenance migration or retained hardware sparing before the PO.
An existing IP Base stack requiring another member needs a matching Catalyst 3850 feature set; mixed LAN Base and IP Base stacks are not supported. Select STACK-T1-50CM, STACK-T1-1M or STACK-T1-3M for the intended spacing, and confirm the existing members' software alignment before ordering the additional member.
A lab or staging area that starts equipment from an unpowered state must maintain an ambient temperature of at least 0°C during cold starts. That startup requirement differs from the running-temperature range. Before the PO, verify the staging environment and specify the hardware condition required for bench preparation.
Active Cisco service coverage
Cisco service for WS-C3850-48U-S ended October 31, 2025. C9300-48U-A is the replacement for migration orders that must move beyond this discontinued hardware.
Multigigabit copper access ports
The fixed access ports stop at 1GbE. Installing an uplink module does not add 2.5G or 5G capability to the existing copper access ports.
40G uplinks from this chassis
The permitted uplink modules provide a maximum interface speed of 10G. The 40G modules available elsewhere in the family are not compatible with this model.
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| WS-C3850-48U-S |  WS-C3850-48UW-S |  WS-C3850-32XS-S |  WS-C3850-48F-L | |
|---|---|---|---|---|
| Depth | 488 mm | 488 mm | 450 mm | 488 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | 10 Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 2 GB | 2 GB | 4 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-C3850-48U-S | WS-C3850-48UW-S | WS-C3850-32XS-S | WS-C3850-48F-L |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB |
| Switching Capacity | 176 Gbps | 176 Gbps | 640 Gbps | 176 Gbps |
| Width | 445 mm | 445 mm | 445 mm | 445 mm |
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Reviewed on the 28 August 2022
Cisco reliability with simple IP Base configuration.
Reviewed on the 11 February 2020
Met enterprise power and connectivity requirements confidently.
Reviewed on the 17 April 2018
UPoE IP Base handled mixed endpoints reliably across all ports.
Reviewed on the 12 July 2018
Strong power delivery with stable switching performance.
Reviewed on the 2 November 2025
Good access-layer solution for VoIP and wireless.
WS-C3850-48U-S identifies a Catalyst 3850 switch: WS-C3850 denotes the switch family, 48 denotes the access-port count, U denotes UPOE ports and S denotes IP Base. The configuration includes 10/100/1000 Ethernet access ports, a PWR-C1-1100WAC and a 1U chassis; an uplink module is not included by default.
The Catalyst 3850 supports console CLI management, remote CLI sessions through SSH or Telnet, SNMP management and Cisco Prime Infrastructure. SSH and encrypted SNMPv3 require the appropriate cryptographic software image. Cisco Prime Infrastructure provides provisioning, monitoring and configuration templates, while a stack can share a single management IP address.
WS-C3850-48U-S provides an 800W shared PoE budget with one PWR-C1-1100WAC and supports Cisco UPOE at 60W per port. Two PWR-C1-1100WAC increase the budget to 1900W, with 60W operation supported on a maximum of 30 ports. The budget does not support simultaneous 60W allocation across all 48 ports.
WS-C3850-48U-S accepts C3850-NM-4-1G, C3850-NM-2-10G and C3850-NM-4-10G. C3850-NM-4-1G provides four Gigabit uplinks, C3850-NM-2-10G supports two 10G uplinks or Gigabit configurations, and C3850-NM-4-10G supports four 10G uplinks. The base switch ships without an uplink module, so the required module and compatible optics must be specified for the order.
StackWise-480 stacks nine Catalyst 3850 members and provides 480 Gbps of stacking bandwidth. STACK-T1-50CM, STACK-T1-1M and STACK-T1-3M are the stacking cable options. Members must use matching feature sets; a mixed LAN Base and IP Base stack is not supported, so existing software alignment matters when ordering an extension.
WS-C3850-48U-S includes Static routing, RIPv1, RIPv2, RIPng, EIGRP Stub and OSPF for routed access through IP Base. Full OSPF, full EIGRP, BGPv4 and IS-ISv4 belong to IP Services. The platform's 24000-entry IPv4 total includes ARP and learned routes and is distinct from a routing feature's license allowance.
No, WS-C3850-48U-S ships with one PWR-C1-1100WAC and an empty second power-supply bay. A second PWR-C1-1100WAC is optional and increases available endpoint power as well as providing another power source. The standard PWR-C1-1100WAC accepts 115-240V AC; specify the second PWR-C1-1100WAC separately when the order requires it.
WS-C3850-48U-S includes IP Base, while separate RTU feature-set upgrades activate IP Services capabilities. Cisco ONE Software for Access Switching is another software-suite purchase path associated with the family. Hardware condition does not determine software entitlement, so specify the required feature set and verify the accompanying license rights separately from the hardware order.
WS-C3850-48U-S replaces WS-C3750X-48U-S, whose end-of-sale date was October 30, 2016. That predecessor was a 48-port UPOE IP Base configuration. WS-C3850-48U-S is itself discontinued and subsequently replaced by C9300-48U-A, so an order for the legacy replacement should be distinguished from a migration to its successor.
Yes, WS-C3850-48U-S reached end of sale on October 30, 2020, and Cisco support ended October 31, 2025. C9300-48U-A is its replacement. Remaining WS-C3850-48U-S inventory can support legacy maintenance purchases, but new sealed condition does not restart Cisco's service lifecycle or restore support after its final date.
New sealed and certified refurbished WS-C3850-48U-S are available with ORM warranties: new orders receive up to a 3-year extended warranty, and certified refurbished orders up to 1 year. Both conditions have 30-day returns; terms apply. Cisco's Enhanced Limited Lifetime Warranty coverage ended October 31, 2025, separately from ORM's order warranty.
WS-C3850-48U-S supports 60W Cisco UPOE endpoints, whereas WS-C3850-48F-S provides PoE+ rather than UPOE. Both are discontinued 48-port Gigabit IP Base configurations. The UPOE model suits maintenance orders involving higher-power devices; the PoE+ variant suits an existing installation whose endpoints remain within the PoE+ power class.
WS-C3850-48U-S includes IP Base, while WS-C3850-48U-E includes IP Services with advanced routing features such as full OSPF, full EIGRP, BGPv4 and IS-ISv4. Both models are discontinued. The IP Base configuration suits retained routed-access deployments; the IP Services configuration suits maintenance requirements that depend on those additional routing features.
WS-C3850-48U-S is discontinued with Cisco support ended, while C9300-48U-A is its replacement. The replacement is a Catalyst 9300 48-port UPOE configuration with Network Advantage rather than IP Base. The legacy switch suits retained-hardware maintenance requirements; C9300-48U-A suits migration orders moving away from the discontinued Catalyst 3850 configuration.
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