Cisco CW9166I-E Catalyst 9166I Wi-Fi 6E Tri-Band 4x4 Indoor Access Point

Enterprise Wi-Fi 6E Connectivity

The Cisco CW9166I-E is a high-performance Catalyst 9166I indoor access point designed for demanding enterprise wireless environments. It supports the 2.4 GHz, 5 GHz and 6 GHz frequency bands and provides three 4x4 radios with four spatial streams.

Wi-Fi 6E adds access to the 6 GHz spectrum for compatible devices, providing additional wireless capacity and helping reduce congestion. Cisco specifies an aggregate PHY data rate of up to 7.78 Gbps under supported configurations.

Key Features

Tri-Band 4x4 Wi-Fi 6E Architecture

The CW9166I-E uses three high-capacity primary radios. Each radio supports four spatial streams, providing 4x4 MIMO operation across the 2.4 GHz, 5 GHz and 6 GHz bands.

• 2.4 GHz: 4x4 MIMO
• 5 GHz: 4x4 MIMO
• 6 GHz: 4x4 MIMO
• 6 GHz Channel Width: Up to 160 MHz
• 5 GHz Channel Width: Up to 80+80 MHz
• 2.4 GHz Channel Width: Up to 20 MHz
• Maximum PHY Rate: Up to 7.78 Gbps
• Wireless Technologies: OFDMA, MU-MIMO, TWT, BSS Coloring and beamforming
• Security: WPA3 support

5G Multigigabit Ethernet

A built-in 100M/1000M/2.5G/5G Multigigabit Ethernet RJ-45 interface provides high-speed wired connectivity between the access point and the network infrastructure. The 5G interface provides additional backhaul capacity for high-throughput Wi-Fi 6E deployments.

The access point also provides an RJ-45 management console port and a USB 2.0 Type-A interface capable of providing up to 4.5W under supported power configurations.

Integrated Antennas and XOR Technology

The CW9166I-E features integrated internal omnidirectional antennas designed for indoor enterprise deployments. The Catalyst 9166I platform incorporates dedicated radio paths for the primary wireless bands together with XOR radio functionality for flexible wireless configurations.

• 2.4 GHz Antenna Gain: 3 dBi
• 5 GHz Antenna Gain: 5 dBi
• 6 GHz Antenna Gain: 4 dBi
• Antenna Type: Integrated internal omnidirectional
• Bluetooth: Bluetooth Low Energy
• Radio Technology: XOR

XOR functionality allows the platform to provide flexible 5 GHz and 6 GHz radio configurations depending on the network design and applicable regulatory requirements.

IoT and Environmental Capabilities

The Catalyst 9166I platform extends beyond conventional wireless connectivity by integrating IoT and environmental capabilities. These functions can support enterprise monitoring, connected devices and infrastructure-aware wireless deployments.

• Bluetooth Low Energy
• Dedicated IoT radio capabilities
• Integrated environmental sensors
• RF monitoring and scanning
• Wireless security monitoring capabilities

Power and Installation

The CW9166I-E supports enterprise Power over Ethernet through 802.3at PoE+ and 802.3bt Cisco UPOE. A 54V DC power option is also available for suitable installations.

• 802.3bt UPOE: Full radio configuration with 5G Ethernet and USB
• 802.3at PoE+: Enterprise wireless operation with Multigigabit Ethernet
• DC Power: 54V
• Maximum PoE Power: 30.5W
• USB Power: Up to 4.5W

Enterprise Applications

• Enterprise offices and corporate campuses
• High-density Wi-Fi 6E environments
• Universities and educational institutions
• Healthcare facilities
• Hotels and hospitality environments
• Retail and commercial buildings
• IoT-enabled enterprise networks
• Large corporate wireless infrastructures
• High-bandwidth collaboration environments

European Regulatory Domain

Cisco's regulatory documentation specifies, for the European Union CE region, maximum total EIRP values of 23 dBm for 2.4 GHz, 5.15–5.25 GHz, 5.25–5.35 GHz and 5.945–6.425 GHz, with up to 30 dBm listed for 5.47–5.725 GHz. Country-specific rules should always be checked before deployment.

Why Choose Cisco CW9166I-E?

The Cisco Catalyst CW9166I-E combines tri-band Wi-Fi 6E, three 4x4 radios, XOR technology, 5G Multigigabit Ethernet, integrated omnidirectional antennas and enterprise wireless management in a high-capacity indoor access point. Its support for the 6 GHz spectrum, Cisco IOS XE and Catalyst 9800 Series Wireless Controllers makes it suitable for demanding enterprise wireless deployments across the European regulatory domain.