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CBS350-48XT-4X
Cisco CBS350-48XT-4X Business 350 48-Port 10 Gigabit Switch,...
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Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
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Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
CBS350-48XT-4X serves small-business Ethernet networks with managed copper connectivity and dedicated fiber uplinks.
CBS350-48XT-4X price for new stock is $6,769.35, a 22.2% saving from the Cisco list price of $8,703.45. CBS350-48XT-4X refurb price is $4,194.75. CBS350-48XT-4X is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for CBS350-48XT-4X for additional pricing. Browse the full Cisco CBS350 Business Switches series or explore all Cisco products.
1040 Gbps switching capacity and 755.81 Mpps forwarding support wire-speed traffic processing on CBS350-48XT-4X.
CBS350-48XT-4X is offered new sealed or certified refurbished, with up to 3-year extended warranties for new units and up to 1 year for certified refurbished units; 30-day returns apply to every condition, terms apply. Refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, and clean boot, with firmware verified and configuration wiped to factory default. Specify the condition, quantity, and required order contents on the purchase order. PO accepted and Net-30 for government are available, with RMA advance replacement and regional stock/RMA across UK, EU, US, and MEA for enterprise and volume orders.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x10G copper / 4x10G SFP+ |
Stacking | Hardware stacking / 4 members |
Max Power Draw | 234.4W |
Cooling | 5 fans |
Replaces | SX350X-52-K9-EU/SX350X-52-K9-NA/SX350X-52-K9-UK/SX550X-52-K9-EU/SX550X-52-K9-NA/SX550X-52-K9-UK; end-of-sale July 30, 2022 |
Lifecycle Status | End-of-sale October 29, 2024 |
CBS350-48XT-4X sits at the server access layer and terminates up to 48 copper 10 Gigabit Ethernet links from rack servers, storage appliances, and high-performance workstations. Engineers segment workloads with VLANs, combine parallel links through LACP, and apply Layer 2 security controls at each attachment point. Four dedicated 10G SFP+ ports carry fiber connections toward the aggregation tier without consuming the copper server interfaces. The design consolidates dense 10GBASE-T access into one rack unit while preserving distinct optical paths for upstream traffic.
CBS350-48XT-4X operates as a distribution switch for multiple 10G copper access links and hands aggregated traffic to upstream infrastructure through four dedicated 10G SFP+ interfaces. Network teams configure 802.1Q trunks, LACP groups, inter-VLAN routing, RIP v2, or static routes according to the topology, while the 1,040 Gbps switching fabric maintains nonblocking forwarding. SFP-10G-SR or SFP-10G-LR optics align each fiber path with the installed plant. The result is a defined copper-to-fiber boundary with routing and segmentation close to connected access domains.
Up to four compatible Cisco Business 350 switches form a hardware stack when operations require one configuration and management plane across an expanded switching block. CBS350-48XT-4X contributes 48 copper 10G ports, four dedicated SFP+ interfaces, and a separate Gigabit out-of-band management port per unit. Engineers standardize stack mode, firmware, VLANs, cross-stack link aggregation, and failover behavior before production handover. Cisco Business Dashboard, the web interface, CLI, and SNMP support ongoing administration. The topology gains centralized control, coordinated failover, and fewer independently managed switching nodes.
A refresh involving SX350X-52-K9-NA or SX550X-52-K9-NA equipment starts with identifying the regional predecessor and its replacement relationship. Both predecessors reached end-of-sale on July 30, 2022. Before the purchase order, distinguish a replacement for existing equipment from a purchase requiring an ongoing manufacturer software-support lifecycle.
A replacement-stock purchase requires the unit condition and acceptance checks to be specified before receipt. Certified refurbished managed units are inspected and bench-tested, firmware verified, and wiped to factory default. For regional replacement arrangements across UK, EU, US, and MEA, specify quantities, condition, and advance-replacement requirements on the purchase order.
Continuing manufacturer security fixes
Manufacturer vulnerability and security support ended October 29, 2025. No migration product is announced for this model, so procurement requiring continuing security fixes needs a separately selected replacement.
Included manufacturer phone support
Included manufacturer phone support ended October 29, 2025. Subsequent phone support requires additional charges or support fees, and availability is not assured.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| CBS350-48XT-4X |  SF350-24 |  CBS350-48P-4X |  SF350-24P |  CBS350-24XS | |
|---|---|---|---|---|---|
| Depth | 450 mm | 202 mm | 350 mm | 257 mm | 350 mm |
| Ethernet Technology | 10 Gigabit Ethernet | Fast Ethernet | Gigabit Ethernet | Fast Ethernet | 10 Gigabit Ethernet |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | CBS350-48XT-4X | SF350-24 | CBS350-48P-4X | SF350-24P | CBS350-24XS |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 234.4W | 10.9W | 471.9W | 240W | 39W |
| Switching Capacity | 1040 Gbps | 12.8 Gbps | 176 Gbps | 12.8 Gbps | 480 Gbps |
| Weight | 7.29 kg | 2.72 kg | 5.43 kg | 4.08 kg | 4.4 kg |
| Width | 440 mm | 440 mm | 445 mm | 440 mm | 440 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.
CBS350 identifies Business 350; 48XT identifies 48 copper 10G ports; 4X identifies four dedicated 10G SFP+ ports on CBS350-48XT-4X.
CBS350-48XT-4X supports HTTP/HTTPS, console CLI, SSH/Telnet, SNMP, Cisco Business Dashboard, and the Cisco Business mobile app.
Yes, CBS350-48XT-4X reached end-of-sale on October 29, 2024. Its final manufacturer shipment milestone was January 27, 2025; reseller condition and availability must be specified separately when ordering remaining equipment.
New sealed and certified refurbished CBS350-48XT-4X units are offered. ORM warranties are up to 3-year extended for new units and up to 1 year for certified refurbished units; 30-day returns apply to every condition, terms apply. Cisco's limited-lifetime hardware warranty is bounded by the October 31, 2029 support deadline.
CBS350-48XT-4X replaces SX350X-52-K9-EU, SX350X-52-K9-NA, SX350X-52-K9-UK, SX550X-52-K9-EU, SX550X-52-K9-NA, and SX550X-52-K9-UK through corresponding regional ordering variants. All six predecessors are discontinued. Match the regional predecessor when identifying the replacement relationship for an existing installation.
CBS350-48XT-4X has no announced migration product. Its regional variants are discontinued without a named successor, so an alternative purchase requires a separate assessment rather than an assumed one-for-one replacement.
Business 350 models affected by this discontinuation, including CBS350-48XT-4X, passed their software-maintenance and vulnerability/security-support deadlines on October 29, 2025. The later hardware-support deadline does not extend those software-maintenance milestones.
The discontinued 350X and 550X predecessors replaced by CBS350-48XT-4X have a last date of support of July 31, 2027. That deadline belongs to the predecessors, not to this replacement model, and applies subject to service or warranty entitlement.
Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, and clean boot. Managed units also have firmware verified and their configuration wiped to factory default.
October 31, 2029 is the last date of support for CBS350-48XT-4X. Applicable service and support remain subject to active service contracts or warranty entitlement until that deadline; all manufacturer support services become unavailable afterward.
United States
