What uplink options are available on the Dell S4128T-ON?

This switch includes 2 x 100GbE QSFP28 uplink ports. These high speed interfaces are designed for 100GbE connectivity to aggregation or core switches. With two uplinks available, network engineers can implement redundant or aggregated links to increase resilience and bandwidth between the access layer and upstream network tiers.

Is the Dell S4128T-ON suitable for 10GbE copper server connections?

Yes, the Dell S4128T-ON is suitable for 10GbE copper server connections because it offers 28 x 1 10GbE RJ-45 ports. These ports allow direct attachment of 10GbE-capable servers using copper cabling, while still accommodating 1GbE devices as needed. This makes it useful for mixed-speed environments during server refresh cycles.

Can the Dell S4128T-ON be used to build high bandwidth uplinks?

The switch can be used to build high bandwidth uplinks through its 2 x 100GbE QSFP28 ports. These ports support 100GbE connections to upper-layer switches, enabling substantial throughput between access and aggregation. This helps reduce the risk of uplink bottlenecks when many 1 10GbE RJ-45 access ports are heavily utilized.

What type of network device is the Dell S4128T-ON?

The Dell S4128T-ON is categorized as an Ethernet switch. Its configuration of 28 x 1 10GbE RJ-45 access ports and 2 x 100GbE QSFP28 uplink ports is intended for Ethernet-based environments, supporting typical access and uplink roles in data center racks, aggregation layers, or campus edge deployments.

4KGFY - Dell S4128T-ON 28 fixed ports; 2 uplink ports Switch

Name: 4KGFY - Dell S4128T-ON 28 fixed ports; 2 uplink ports Switch
Brand: Dell
SKU: 4KGFY
Price: 3372 USD
Availability: InStock

4KGFY - Dell S4128T-ON 28 fixed ports; 2 uplink ports Switch | US IT Hardware

Product overview

The Dell S4128T-ON, SKU 4KGFY, is an Ethernet switch designed around high density copper and high speed uplink connectivity. It provides 28 x 1 10GbE RJ-45 ports, allowing flexible server and device terminations over standard twisted-pair cabling. For uplink and aggregation, the switch includes 2 x 100GbE QSFP28 interfaces that support high bandwidth connections to core or aggregation layers. This port mix enables IT teams to consolidate multiple 1 10GbE access links while maintaining scalable backbone capacity. As part of a structured switching deployment, the S4128T-ON helps standardize on 10GbE copper at the edge while using 100GbE for inter-switch connectivity. Organizations evaluating top-of-rack or wiring-closet upgrades can align this platform with requirements that emphasize twisted-pair access and QSFP28-based uplink options.

28 x 1 10GbE RJ-45 copper access ports
2 x 100GbE QSFP28 high speed uplinks
1 10GbE access for flexible device speeds
RJ-45 interfaces for twisted-pair cabling
QSFP28 uplinks for 100GbE connectivity
Designed as an Ethernet switch platform

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	4KGFY
Brand	Dell
Condition	Refurbished
Model	S4128T-ON
Series	S4100-ON Series
Part Class	Used; Refurbished
Technology	10GBase-T access switch with 100GbE uplinks
Form Factor	Rack-mount
Product Line	EMC Networking
Product Type	Ethernet Switch
Airflow Direction	Standard airflow

Best for

Data center racks
Use the 28 x 1 10GbE RJ-45 ports to connect servers or storage over copper, while the 2 x 100GbE QSFP28 ports provide high bandwidth uplinks to spine or aggregation switches.
Aggregation
Leverage the 2 x 100GbE QSFP28 interfaces to aggregate multiple 1 10GbE RJ-45 edge switches, consolidating traffic into high speed uplinks toward the core network.
Campus edge
Deploy the 28 x 1 10GbE RJ-45 ports for high speed user or device access and utilize the 2 x 100GbE QSFP28 ports to connect to distribution or core layers.
Server access
Attach 10GbE-capable servers directly using the 28 x 1 10GbE RJ-45 copper ports and use the 2 x 100GbE QSFP28 ports for resilient upstream connectivity.
Storage connectivity
Connect storage appliances over the 1 10GbE RJ-45 ports while using the 100GbE QSFP28 uplinks to provide sufficient bandwidth for backup or replication traffic.

Frequently asked questions

How many copper access ports does the Dell S4128T-ON provide?

Details

Shipping, warranty & returns

Customer reviews

No reviews yet — be the first to review this part.

Lifecycle Status	Refurbished hardware; original product status not stated

Power Supply Type	AC power supply
Power Supplies Included	2 x AC PSU

Networking Ports & Interfaces

Total Ports	28 ports
Uplink Ports	2 x fixed 100GbE QSFP28 ports
Port Type Summary	28x 10GBase-T RJ-45; 2x 100GbE QSFP28
Ethernet Technology	10 Gigabit Ethernet; 100 Gigabit Ethernet uplinks
Fixed Ethernet Ports	28 x 1/10GbE auto-sensing RJ-45 ports
Management Operating System	Dell OS10
Quantity of Fixed Ports/Expansion Slots	28 fixed ports; 2 uplink ports

Dell S4128T-ON 28 fixed ports; 2 uplink ports Switch