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WS-C3750X-12S-S
Cisco WS-C3750X-12S-S Catalyst 3750-X 12-Port Gigabit SFP Sw...
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WS-C3750X-12S-S is a managed Layer 3 enterprise switch with 12 Gigabit SFP access ports and IP Base software. The Catalyst 3750-X chassis occupies one rack unit and has an optional uplink module bay rather than installed uplink ports. Fiber connections do not provide endpoint power.
WS-C3750X-12S-S price for new stock is $1,092.00, a 90.5% saving from the Cisco list price of $11,500.00. WS-C3750X-12S-S refurb price is $220.50. WS-C3750X-12S-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3750X-12S-S for additional pricing. Browse the full Cisco 3750X Catalyst Switches series or explore all Cisco products.
160 Gbps switching fabric provides the internal switching capacity. WS-C3750X-12S-S supports OSPF for routed access under IP Base, not the full advanced-routing feature set. Select the uplink configuration before comparing forwarding performance or electrical consumption: those figures change with the installed hardware.
WS-C3750X-12S-S is offered new sealed or certified refurbished; ORM provides up to a 3-year extended warranty on new units and up to a 1-year warranty on certified refurbished units, with 30-day returns on every condition, terms apply. Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, clean boot, optics bay recognition, module bay recognition, stack adapter negotiation, PSU status and fan status; firmware is verified and configuration wiped to factory default. Specify this switch's condition, accessory contents and quantity on the PO. PO acceptance, government Net-30 and RMA with advance replacement support enterprise and volume orders across UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS |
License Tier | IP Base |
Port Configuration | 12 x 1G SFP, optional modular uplinks |
Stacking | StackWise Plus, nine members |
Lifecycle Status | Cisco hardware support ended October 31, 2021 |
Replacement PID | C9300-24S-E / WS-C3750X-12S-S-RF, Cisco remanufactured |
In enterprise campus backbones, IT deploys the WS-C3750X-12S-S Catalyst 3750X 12 Port GE SFP IP Base at wiring closets to aggregate multiple access-layer switches via 1 Gbps SFP fiber uplinks. StackWise Plus stacking (up to nine units) combined with IOS IP Base features—EIGRP dynamic routing and resilient EtherChannel—delivers sub-50 ms convergence, 20 Gbps redundant bandwidth, and non-disruptive software upgrades. Benefit: high-availability campus connectivity with scalable fiber aggregation and simplified network operations.
In virtualized data centers, network architects select the WS-C3750X-12S-S IP Base switch as a top-of-rack solution for VMware ESXi clusters, connecting hosts via 1 Gbps SFP fiber. Integrated QoS policies, VLAN segmentation and NetFlow analytics ensure deterministic VM-to-VM performance, low latency and granular traffic visibility. StackWise Plus resiliency and hot-swappable SFP modules enable continuous operations with zero downtime. Benefit: optimized application performance, efficient traffic management and rapid fault isolation.
Security teams implement the WS-C3750X-12S-S Catalyst 3750X 12 Port GE SFP IP Base switch to build a dedicated fiber backbone for IP surveillance across multi-building campuses. Leveraging Cisco IP Base features—port security, DHCP snooping and VLAN-based traffic segregation—camera streams traverse isolated VLANs with guaranteed bandwidth and minimal packet loss. Hot-swappable SFP modules reduce maintenance windows. Benefit: secure, scalable, high-performance video transport and simplified network security management.
When replacing a discontinued WS-C3750G-12S-S or WS-C3750G-12S-SD, separate hardware replacement from a current-generation refresh. WS-C3750X-12S-S was their replacement, but is itself discontinued. Match the existing connections and configuration before specifying the replacement unit, condition and required accessories on the purchase order.
When purchasing a shelf spare, itemize chassis accessories rather than assuming their inclusion with a refurbished unit. C3KX-RACK-KIT= identifies the rack mounting kit. Record the required accessory quantity, delivery region and switch condition together, then confirm the supplied contents before issuing the purchase order.
Active Cisco hardware support
Cisco hardware support ended October 31, 2021. C9300-24S-E is the current fiber migration option, with 24 access ports rather than 12.
Powered copper endpoint connections
The fixed access interfaces are SFP cages, not powered copper ports. A purchase requiring endpoint power needs a different access-switch configuration.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| WS-C3750X-12S-S |  WS-C3750X-24S-S |  WS-C3750X-48P-L |  WS-C3750X-48T-S |  WS-C3750X-24P-L | |
|---|---|---|---|---|---|
| Depth | 460 mm | 460 mm | 460 mm | 460 mm | 495 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 128 MB | 128 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-12S-S | WS-C3750X-24S-S | WS-C3750X-48P-L | WS-C3750X-48T-S | WS-C3750X-24P-L |
| Memory | 512 MB | 512 MB | 256 MB | 256 MB | 256 MB |
| Power Consumption | 130.3W with C3KX-SM-10G at 100% traffic | 156.8W (100% traffic with C3KX-SM-10G) | 134.9W at 0% traffic without PoE load using C3KX-NM-1G | 161.61W at 100% traffic with C3KX-SM-10G | 122.4W excluding PoE / C3KX-NM-10GT installed / 115V AC |
| Switching Capacity | 160 Gbps | 160 Gbps | 160 Gbps | 160 Gbps | 160 Gbps |
| Weight | 6.8 kg. | 7 kg. | 7.5 kg | 7.4 kg | 7.2 kg |
| Width | 445 mm | 445 mm | 445 mm | 445 mm | 445 mm |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
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.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviewed on the 16 May 2023
12-port SFP IP Base switch is compact, reliable, and easy to manage.
Reviewed on the 17 April 2026
Handles small deployments efficiently with predictable performance.
Reviewed on the 15 October 2024
Minimal downtime, stable throughput.
Reviewed on the 1 March 2025
Perfect for branch office and small enterprise networks.
Reviewed on the 7 June 2017
Cisco build ensures dependable operation.
WS-C3750X identifies the Catalyst 3750-X switch family; 12S identifies 12 Gigabit SFP ports; the final S identifies IP Base.
WS-C3750X-12S-S supports console CLI, SSH, Telnet, a PC-based configuration tool and CiscoWorks LMS. SSH requires a cryptographic software image.
Yes. WS-C3750X-12S-S reached end of sale October 30, 2016, and Cisco hardware support ended October 31, 2021.
ORM offers WS-C3750X-12S-S new sealed with up to a 3-year extended warranty, or certified refurbished with up to a 1-year warranty. Both conditions have 30-day returns; terms apply. Cisco's original enhanced limited lifetime hardware warranty ended October 31, 2021.
WS-C3750X-12S-S includes IP Base. Historical IP Services upgrade paths are C3750X-12S-S-E for a paper license and L-C3750X-12S-S-E for an electronic license.
WS-C3750X-12S-S replaced discontinued WS-C3560E-12SD-S, WS-C3560E-12SD-S=, WS-C3750G-12S-S and WS-C3750G-12S-SD switches. Those predecessor identities are useful when matching a legacy replacement purchase.
WS-C3750X-12S-S has IP Base; WS-C3750X-12S-E has IP Services. Both are discontinued; legacy buyers should match the activated feature set their configuration requires.
WS-C3750X-12S-S provides unpowered SFP connections; WS-C3750X-24P-S provides powered copper access. Both are discontinued; the required endpoint connection determines the appropriate legacy configuration.
C9300-24S-E has 24 Gigabit SFP access ports versus 12 on WS-C3750X-12S-S. The former suits a current refresh; the latter serves legacy matching requirements.
Catalyst 3750-X StackWise Plus supports nine members. LAN Base members cannot mix with IP Base or IP Services members.
No. WS-C3750X-12S-S ships with one C3KX-PWR-350WAC; a second supply is optional. Specify the installed supply quantity on the order.
No. WS-C3750X-12S-S-RF identifies Cisco remanufactured equipment. ORM certified refurbished is a separate condition with ORM's inspection and bench-testing process.
United States
