Wi-Fi Standard: IEEE 802.11a/b/g/n/ac/ax (Wi-Fi 6 R2 and Wi-Fi 6E certified; no Wi-Fi 7)
Spatial Streams (MIMO): 4x4 on each radio (2.4 GHz, 5 GHz, 6 GHz); 4x4 UL/DL MU-MIMO
Aggregate Throughput: Up to 7.78 Gbps PHY per radio (6 GHz 4x4 160 MHz peak); Cisco publishes no combined tri-radio total
Radios (bands): Three 4x4 radios: 2.4 GHz, 5 GHz, 6 GHz (LPI); dual-band XOR radio (6 GHz or secondary 5 GHz); integrated BLE 5.1 and IoT radios; dedicated scanning radio for security and RF management
Uplink Port Speed: 1x multigigabit RJ-45 at 100M/1G/2.5G/5G; management console RJ-45; USB 2.0 (4.5 W)
Max Clients: Not stated by Cisco; some reseller listings cite about 1200 for the CW9166D1 (unverified)
PoE Requirement: 802.3bt (UPOE) 30.5 W max for full functionality with USB; 802.3at (PoE+) 25.5 W max without USB; 802.3af (14 W) for staging only with radios off; optional 54 V DC input (MA-PWR-50WAC)
Dimensions and Weight: CW9166I: 9.5 x 9.5 x 2.2 in, 3.54 lb; CW9166D1: 9.5 x 9.5 x 2.28 in, 3.50 lb
Models: CW9166I-x and CW9166D1-x (on-premises, IOS-XE); CW9166I-MR and CW9166D1-MR (Meraki cloud-managed)
Minimum Software: IOS-XE 17.9.1 (CW9166I) and 17.12.1 (CW9166D1), per third-party sources
Curation Review
✔ Pros:Tri-band Wi-Fi 6E with 4x4 on 2.4, 5 and 6 GHz; 6 GHz access adds clean spectrum for high-density deployments; Dedicated scanning radio supports continuous RF monitoring, security and WIPS; Choice of internal omnidirectional (CW9166I) or directional (CW9166D1) antennas; Supports Cloud management via Meraki (-MR SKUs) or on-premises IOS-XE; WPA3-R3, WPA3 Suite B and Enhanced Open security; Single 2.5G multigigabit uplink works with standard 802.3at/bt PoE
✘ Cons:Wi-Fi 6E only, with no Wi-Fi 7 (802.11be) support; Full feature set needs 802.3bt (UPOE), so 802.3at switches cannot power every feature; Only one uplink port, with no link aggregation or redundancy; Cisco publishes no max client count, so capacity planning relies on estimates; Regional suffixes and regulatory approvals vary, so some SKUs may not be approved for every country; Premium price, with list MSRP about $2,500 and reseller prices often well below it
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