T5W4N - Dell EMC PowerSwitch Z9100-ON 32-Port 100GbE Switch

Dell EMC PowerSwitch Z9100-ON (T5W4N): 1U Layer 3 managed switch, 32x100GbE QSFP28 + 2x SFP+, 6.4Tbps switching, dual redundant PSUs for high-performance data centers.

The Dell EMC PowerSwitch Z9100-ON (MPN: T5W4N) is a high-density, 1U fixed-configuration Layer 3 managed Ethernet switch built for high-performance data center and computing environments. It provides 32 QSFP28 ports that can be flexibly configured for 100GbE, 50GbE, 40GbE, 25GbE, or 10GbE operation, plus two additional SFP+ ports for 10GbE/1GbE/100MbE connectivity. Leveraging a non-blocking switching architecture, the switch delivers line-rate Layer 2 and Layer 3 forwarding with up to 6.4 Tbps of switching capacity, making it suitable for top-of-rack, end-of-row, and spine/core deployment in high-speed data center fabrics. It ships preloaded with Dell EMC Networking OS9 (with OS10 support) and supports ONIE for alternate operating system installation, enabling a flexible, software-defined networking approach.

• Manufacturer: Dell EMC (Dell Technologies)
• Product Family: Dell EMC Networking / PowerSwitch Z-Series
• Product Series: Z9100-ON
• MPN / Model: T5W4N
• Product Type: Layer 3 Managed Fixed Ethernet Switch
• Fixed Ports: 32 x QSFP28 (100/50/40/25/10GbE configurable)
• Uplink Ports: 2 x SFP+ (10GbE/1GbE/100MbE)
• Port Density Options: 32x100GbE, 64x50GbE, 32x40GbE, 128x25GbE, or 128x10GbE (breakout)
• Switching Capacity: 6.4 Tbps (full duplex)
• Forwarding Rate: 4400 Mpps (full duplex)
• Latency: Below 500 ns
• MAC Address Table: 136,000 entries
• CPU: Intel Atom C2538 Quad-Core, 2.4GHz (Rangeley platform)
• Memory (RAM): 8GB DDR3L SO-UDIMM with ECC
• Storage/Flash: 32GB mSATA SSD (16GB usable)
• Operating System: Dell EMC Networking OS9 (preloaded); OS10 supported; ONIE for alternate NOS
• Power Supply: Dual redundant, hot-swappable 750W AC (or DC) PSUs
• Max Power Consumption: 605 Watts
• Typical Power Consumption: 195 Watts
• PoE Support: Not supported
• Cooling: 5 hot-swappable fan modules; standard or reverse airflow
• Management Ports: 1x RJ45 console (RS232), 1x 10/100/1000BaseT mgmt, 1x USB 2.0 Type-A, 1x micro-USB Type-B console
• Link Aggregation: Up to 128 LAGs, 16 members per group
• Key Protocols: VRF-lite, mVLT, PFC, DCBX, ETS, jumbo frames, IPv4/IPv6
• Security: 802.1X port authentication, IP/MAC ACLs, SNMP auth
• Operating Temperature: 0°C to 45°C (32°F to 113°F)
• Operating Humidity: 10–90% RH, non-condensing
• Storage Temperature: -40°C to 70°C (-40°F to 158°F)
• Dimensions: 1.72"H x 17.1"W x 18"D (1RU)
• Weight: 22 lbs (9.98 kg)
• Warranty: 5-year Basic Hardware Service (Lifetime Limited Warranty tier); optional ProSupport/ProSupport Plus

• 32 QSFP28 ports supporting flexible 10/25/40/50/100GbE speeds
• 2 additional SFP+ ports for 10GbE/1GbE/100MbE connectivity
• Non-blocking architecture delivering line-rate L2/L3 forwarding
• 6.4 Tbps switching capacity for high-throughput data center fabrics
• Sub-500ns latency for latency-sensitive workloads
• Dual redundant, hot-swappable 750W AC power supplies
• 5 hot-swappable fan modules with selectable airflow direction
• ONIE support for zero-touch installation of alternate network OS
• Dell EMC Networking OS9 preloaded with OS10 compatibility
• mVLT multi-chassis link aggregation for resiliency
• VRF-lite for L3 traffic isolation across tenants
• Priority-based flow control (PFC), DCBX, and ETS for DCB environments
• Tool-less ReadyRails mounting for fast rack installation
• Support for 128 link aggregation groups with up to 16 members each

Purpose-built for high-performance, high-density 100GbE data center switching fabrics.

• Top-of-rack (ToR) server aggregation in high-performance data centers
• End-of-row (EoR) aggregation for multi-rack deployments
• 100GbE core/spine switching for large-scale data center fabrics
• High-performance computing (HPC) cluster interconnects
• Software-defined data center network fabric deployment
• VXLAN Layer 2 gateway connecting overlay and physical networks
• Migration path from 10/40GbE to 25/50/100GbE infrastructure

• High port density in compact 1U form factor
• Line-rate L2/L3 performance at 6.4Tbps
• Flexible port speed configuration options
• Redundant power and cooling for uptime
• Open OS support via ONIE for flexibility
• Low latency ideal for demanding workloads

• Form Factor: 1 Rack Unit (1RU)
• Dimensions (H x W x D): 1.72" x 17.1" x 18"
• Weight: 22 lbs (9.98 kg)
• Airflow Options: Standard (I/O to PSU) or Reverse (PSU to I/O)

Per available documentation, this switch is validated for use with:

• Dell EMC Networking OS9 and OS10 operating systems
• QSFP28 100GbE optical and DAC transceivers/cables
• QSFP28-to-4xSFP28 25GbE breakout cables
• QSFP+ 40GbE optical and DAC transceivers/cables
• QSFP+-to-4xSFP+ 10GbE breakout cables
• Z9100 Cable Breakout Kits (MTP to LC, multiple fiber configurations)
• Dell ReadyRails rack mounting kits
• Dell PowerEdge server platforms (FC640, M640, R430, R440, R540, R6415, R7415, R7425, T440, T640) for shared accessory/transceiver compatibility

Note: Compatibility listings reflect shared transceiver/cable and rail-kit ecosystems referenced by Dell and authorized resellers; always confirm exact optic/cable part numbers against the current Dell EMC Networking Transceiver Guide before purchase.

• Dell EMC PowerSwitch Z9100-ON switch chassis
• 2 x hot-swappable AC power supply units
• 5 x hot-swappable fan modules
• ReadyRails rack mounting kit
• Documentation/Getting Started Guide

Q: What is the Dell part number T5W4N?

A: T5W4N is the Dell manufacturer part number for the Dell EMC PowerSwitch Networking Z9100-ON, a 32-port 100GbE QSFP28 Layer 3 managed switch.

Q: How many ports does the T5W4N (Z9100-ON) support?

A: It has 32 QSFP28 ports configurable for 100/50/40/25/10GbE plus 2 SFP+ ports for 10GbE/1GbE/100MbE, for a total of 128 usable ports via breakout cabling.

Q: What is the switching capacity of the Z9100-ON?

A: The switch delivers up to 6.4 Tbps of switching I/O bandwidth in full duplex mode, using a non-blocking architecture for line-rate L2/L3 forwarding.

Q: Does the T5W4N switch support PoE?

A: No, Power over Ethernet (PoE) is not supported on this switch, according to distributor documentation.

Q: What operating system does the Z9100-ON run?

A: It ships preloaded with Dell EMC Networking OS9 and also supports Dell EMC Networking OS10, with ONIE enabling installation of alternate network operating systems.

Q: What is the power supply configuration for T5W4N?

A: It includes dual redundant, hot-swappable 750W AC power supplies, with a maximum power draw of 605 Watts and typical consumption around 195 Watts.

Q: What is the physical size and weight of the switch?

A: The Z9100-ON is a 1RU switch measuring 1.72" x 17.1" x 18" and weighing approximately 22 lbs (9.98 kg).

Q: Does Dell publish MTBF data for the Z9100-ON?

A: No, according to Dell community support responses, Dell no longer publishes MTBF or similar reliability metrics for this switch generation.