What uplink options are available on the R9W91A switch?

The R9W91A model includes 4 x 40 100GbE QSFP28 ports that are intended for uplinks or aggregation. These high bandwidth QSFP28 interfaces allow connection to higher layer switches in the network, such as core or spine devices, supporting scalable campus and data center architectures.

What is the form factor and airflow direction of the R9W91A?

The HPE Aruba Networking CX 8100 R9W91A is a 1U Layer 3 Ethernet switch with back to front airflow. This compact form factor fits standard racks, and the airflow direction aligns with typical hot aisle cold aisle layouts, making it suitable for data center and enterprise rack deployments.

What is included in the R9W91A power and cooling bundle?

This R9W91A configuration is described as a back to front airflow bundle that includes three fans and two power supplies. Having these components bundled ensures the switch chassis is fully populated for cooling and power, simplifying installation planning for enterprise and data center environments.

For which network roles is the R9W91A best suited?

The R9W91A is categorized as an enterprise Layer 3 Ethernet switch with 48 x 10GbE SFP+ ports and 4 x 40 100GbE QSFP28 ports in a 1U form factor. These characteristics make it suitable for campus aggregation and data center top of rack roles, where dense 10GbE access and high speed uplinks are required.

R9W91A - HPE CX 8100 48 x 10G SFP+ 4 x 40/100G QSFP28 Back-to-Front Airflow 3 Fan 2x Power Supply Bundle Switch

Name: R9W91A - HPE CX 8100 48 x 10G SFP+ 4 x 40/100G QSFP28 Back-to-Front Airflow 3 Fan 2x Power Supply Bundle Switch
Brand: HPE
SKU: R9W91A
Price: 9555 USD
Availability: InStock

R9W91A - HPE CX 8100 48 x 10G SFP+ 4 x 40/100G QSFP28 Back-to-Front Airflow 3 Fan 2x Power Supply Bundle Switch | US IT Hardware

Product overview

The Hewlett Packard Enterprise R9W91A is an HPE Aruba Networking CX 8100 Series enterprise Layer 3 Ethernet switch designed for campus aggregation and data center top of rack roles. It provides 48 x 10GbE SFP+ interfaces for high density fiber connectivity, complemented by 4 x 40 100GbE QSFP28 uplink or aggregation ports. The switch is delivered in a 1U form factor suitable for standard rack deployments. This model features back to front airflow, supporting data center cooling layouts, and includes a bundle of three fans and two power supplies for a fully populated chassis. Positioned for enterprise environments, it fits network designs that require 10GbE server or access aggregation with 40 100GbE uplinks. As part of the CX 8100 family, it targets scalable Layer 3 switching where consistent 10GbE access and higher speed QSFP28 uplinks are required.

48 x 10GbE SFP+ high density access ports
4 x 40 100GbE QSFP28 uplink aggregation ports
1U enterprise Layer 3 Ethernet switch
Back to front airflow design
Bundle includes 3 fans and 2 power supplies
Suited for campus aggregation and data center ToR

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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 #	R9W91A
Brand	HPE
Condition	Refurbished
Model	CX 8100 48 x 10G SFP+ 4 x 40/100G QSFP28 Back-to-Front Airflow 3 Fan 2x Power Supply Bundle
Series	CX 8100 Switch Series
Airflow	Back-to-front
Part Class	Bundle including base switch, 2 power supplies, 3 fan trays
Rack Units	1U
Technology	Fixed-port Layer 3 Ethernet switch
Form Factor	Rack-mountable
Product Line	HPE Aruba Networking CX 8100

Best for

Campus aggregation
Suited for enterprise campus aggregation where 48 x 10GbE SFP+ ports can consolidate high density access switches and the 4 x 40 100GbE QSFP28 ports provide higher speed uplinks to the core.
Data center top of rack
Designed for data center top of rack deployments, using the 48 x 10GbE SFP+ ports for server or storage connections and 4 x 40 100GbE QSFP28 ports for upstream connectivity.
High density 10GbE access
Fits environments that require a concentration of 10GbE fiber connections, with 48 x 10GbE SFP+ interfaces delivering dense access or aggregation capabilities in a 1U footprint.
Enterprise Layer 3 switching
Appropriate for enterprise Layer 3 Ethernet switching scenarios that need both 10GbE SFP+ access ports and 40 100GbE QSFP28 uplinks within a compact 1U chassis.
Back to front cooled racks
Suitable for racks designed around back to front airflow, with the CX 8100 R9W91A using a back to front airflow design, three fans, and two power supplies in the bundle.

Frequently asked questions

How many 10GbE ports does the HPE Aruba CX 8100 R9W91A provide?

Details

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Product Type	Switch

Layer Support	Layer 3

Enclosure Type	Rack-mountable 1U

Enterprise Usage	Enterprise campus aggregation and data center top-of-rack

Operating System	AOS-CX

Fan Modules Included	3 fans

Base Switch Model Included	8100-48XF4C base switch (R9W96A)

Power Consumption

Power Supply Type	AC power supplies
Power Supplies Included	2 power supplies
Power Supply Redundancy	Redundant power supplies (2x JL712A in bundle)
Number of Power Supplies	2 installed power supplies

Networking Ports & Interfaces

Port Type	SFP+ for 10GbE, QSFP28 for 40/100GbE
Network Technology	Gigabit Ethernet; 10 Gigabit Ethernet; 40 Gigabit Ethernet; 100 Gigabit Ethernet
Switching Capacity	Up to 1.76 Tbps
Ethernet Technology	10 Gigabit Ethernet; 40 Gigabit Ethernet; 100 Gigabit Ethernet
Management Interface	AOS-CX software with automation options
Total Number of Ports	52 ports
10 Gigabit Ethernet Ports	48 x 10GbE SFP+ ports
40/100 Gigabit Ethernet Ports	4 x 40/100GbE QSFP28 ports