Spatial Streams (MIMO): 4x4:4 on each of the three client radios (2.4 GHz, 5 GHz, 6 GHz); MU-MIMO and OFDMA supported
Aggregate Throughput: Up to 7.78 Gbps tri-radio aggregate (maximum over-the-air PHY/chipset frame rate, not per-client throughput)
Radios (bands): Tri-radio 4x4:4: 2.4 GHz client radio, 5 GHz client radio, 6 GHz client radio; plus tri-band scanning radio (2.4/5/6 GHz) for security/RF analytics and a 2.4 GHz Bluetooth Low Energy radio
Uplink Port Speed: 1x multigigabit RJ45 (100 Mbps / 1 Gbps / 2.5 Gbps / 5 Gbps BASE-T); also 1 USB 2.0 Type-A port
Max Clients: Not published in the sources reviewed
PoE Requirement: 802.3bt (UPOE) 30.5 W for full functionality including USB; 802.3at (PoE+) 25 W supported with reduced functionality and no USB; 802.3af not supported; 54 V DC option available
Form Factor: Indoor ceiling/wall-mount access point; omnidirectional (CW9166I) or directional (CW9166D1) antenna variants
Dimensions: 241.3 x 241.3 x 56.9 mm (CW9166I) / 57.9 mm height (CW9166D1); approx. 1.6 kg
✔ Pros:Tri-band Wi-Fi 6E with 4x4:4 on every client radio for high-density capacity; dedicated tri-band scanning radio for WIPS, spectrum analysis, and location analytics; multigigabit 5 Gbps uplink on a single RJ45 port; Bluetooth Low Energy radio for beacons and asset tracking; supports both Catalyst 9800 controller and Meraki cloud management; full functionality on 802.3bt PoE with USB output
✘ Cons:Full feature set requires 802.3bt (UPOE) power, and 802.3at operation reduces functionality; only one uplink port, so no link aggregation or redundancy; premium price compared with many Wi-Fi 6E APs; maximum client count is not published in available sources; Catalyst (CW9166I-B/-E) and Meraki (CW9166I-MR) SKUs are the same hardware under different management licences, which can confuse purchasing; end-of-sale/end-of-life status is unconfirmed and should be checked with Cisco
Est. Price:
$1,136 - $3,317
Compare Against
Cisco Catalyst 9176I (CW9176I-CFG)
★ 0.0 Value Score
Technical Specifications
Wi-Fi Standard: IEEE 802.11be (Wi-Fi 7), backward compatible with 802.11a/b/g/n/ac/ax
Spatial Streams (MIMO): 4x4 MU-MIMO (4 spatial streams) on 2.4 GHz, 5 GHz and 6 GHz client radios
Aggregate Throughput: 18 Gbps theoretical PHY (tri-radio, 802.11be); sustained client throughput not published by Cisco
Radios (bands): Tri-band client radios: 2.4 GHz (20 MHz, 688 Mbps PHY), 5 GHz (up to 160 MHz, 5,700-5,764 Mbps PHY), 6 GHz (up to 320 MHz, 11,520-11,529 Mbps PHY); plus dedicated tri-band scanning radio, 2.4 GHz IoT radio, UWB, GNSS and BLE 5.3 radio
PoE Requirement: 802.3bt (UPOE) recommended for full operation (39 W Class 5 in power table; datasheet text references Class 6 / 60 W); 802.3at supports 2.5G with 2.4 GHz at 2x2; 802.3af for low-power staging only with radios off
Antennas: Internal omnidirectional; peak gain 5 dBi (2.4 GHz), 6 dBi (5 GHz and 6 GHz)
Other Ports: 1x management console RJ-45 (115,200 bps default); 1x USB 2.0 (9 W, 802.3bt only); Kensington lock slot
Dimensions / Weight: 9.5 x 9.5 x 2.0 in (241 x 241 x 51 mm) excluding mount plate / 3.4 lb (1.56 kg)
Management: Catalyst 9800 WLC or Catalyst Center (IOS XE 17.15.2 or later); Meraki cloud management in Meraki SKU variant
Price Note: Retailer listings only; no official Cisco list price found. Low end is a sale price for the CFG SKU; high end is a US MSRP-style figure for a related listing
Curation Review
✔ Pros:Tri-band Wi-Fi 7 with 4x4 MU-MIMO on all client radios and 320 MHz channels on 6 GHz; Dedicated tri-band scanning radio for continuous RF monitoring and security; Multigigabit uplink up to 10 Gbps, avoiding 1G bottlenecks for high-density traffic; Integrated IoT, UWB, GNSS and BLE 5.3 radios for location and sensor use cases; Flexible management through Catalyst 9800 WLC/Catalyst Center or Meraki cloud, depending on SKU
✘ Cons:Max client count is not published in the datasheet, making capacity planning harder; The 18 Gbps aggregate is a theoretical PHY figure, not real-world throughput; 10 Gbps uplink requires Cat6/Cat6A cabling and 802.3bt PoE for full performance; Power requirements are inconsistent across Cisco's documents (Class 5 at 39 W vs Class 6 at 60 W), so the injector or switch must be verified; Premium price compared with Wi-Fi 6E alternatives, with wide retailer price variance and confusing SKU suffixes (CFG, RTG, Meraki variants)