We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 2U rack-mountable switch chassis with four front expansion slots

HPE

HPE 7904Product FlexFabric 7900 Switch Chassis 4 Expansion Slots 2U

SKU CH-4WZG-Q5TJ4 MPN 7904Product

A 2U rack-mountable switch chassis with four expansion slots and Layer 3 support

  • Switch TypeSwitch Chassis
  • 4 expansion slots let you scale connectivity with Network Interface Modules
  • Layer 3 routing support handles IP traffic at wire speed
  • Manageable chassis enables remote configuration and monitoring
  • 2U rack-mount form factor fits standard cabinets while saving space
  • 04 lb chassis weight allows single-person installation in most racks

FlexFabric 7904 Switch Chassis

The HPE FlexFabric 7904 is a manageable Layer 3 switch chassis designed for data-centre and campus aggregation layers. It fits a 2U rack footprint and provides four expansion slots for Network Interface Modules, allowing administrators to tailor port density and media type to the network design.

Four Expansion Slot Architecture

Each of the four slots accepts a Network Interface Module, so the total I/O count depends entirely on the modules chosen. The chassis itself supplies the switching fabric and management plane but contributes no fixed ports, meaning capacity scales only when modules are populated and the backplane bandwidth they require is available.

Modular Capacity and Physical Limits

The 2U form factor measures 3.5 inches high, 17.3 inches wide and 28.4 inches deep, weighing approximately 50.04 pounds, which constrains how many chassis can be stacked in a standard rack. Once all four slots are filled the chassis reaches its port and throughput ceiling, so networks that anticipate growth beyond four modules will need additional chassis or a larger platform.

Highlights

  • 4 expansion slots let you scale connectivity with Network Interface Modules
  • Layer 3 routing support handles IP traffic at wire speed
  • Manageable chassis enables remote configuration and monitoring
  • 2U rack-mount form factor fits standard cabinets while saving space
  • 04 lb chassis weight allows single-person installation in most racks

Specifications

BrandHPE
SeriesFlexFabric 7900
Model7904
Switch TypeSwitch Chassis

Questions about this item

How many expansion slots does the FlexFabric 7904 chassis provide for adding Network Interface Modules?

The chassis includes 4 expansion slots, each accepting a Network Interface Module to scale port density and media type as needed.

What does Layer 3 support mean for the FlexFabric 7904 in a production network?

Layer 3 support enables the switch to route IP traffic between VLANs and subnets, handling inter-VLAN routing and static or dynamic routing protocols directly on the chassis.

What rack height does the 2U FlexFabric 7904 occupy and how does that affect density?

At 2U (3.5 inches) high, the chassis fits two units in a standard 4U rack space, allowing up to 8 expansion slots per 4U while leaving room for cable management and airflow.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.