Aggregate Throughput: Up to 24 Gbps PHY (quad-radio mode); up to 18-23 Gbps PHY (tri-radio mode); per-band 802.11be rates not published
Radios (bands): Tri-band 2.4 GHz / 5 GHz / 6 GHz; runs in quad or tri radio mode; channel widths 6 GHz 20-320 MHz, 5 GHz 20-160 MHz, 2.4 GHz 20 MHz
Uplink Port Speed: 2x RJ-45 multigigabit ports at 100M/1G/2.5G/5G/10G (Cat 6/6A required for 10G; Cat 5e up to 5G); RJ-45 console port at 115200 bps
Max Clients: Not published by Cisco
PoE Requirement: 802.3bt UPOE Class 6 (47W max, both 10G ports) or 802.3at PoE+ (25.5W max); 802.3af only for staging with radios off; optional CW-INJ-8 power injector
Power Draw: Idle 19.6W +/-2W; typical 25.7W +/-4W (UPOE) or 23.6W +/-4W (PoE+)
Antennas: 4 external antenna connectors (color-coded); integrated 2.4/5/6 GHz directional, IoT omnidirectional, and GNSS omnidirectional with software-configurable beam patterns
Dimensions / Weight: 475 x 330 x 73 mm (18.7 x 13.0 x 2.9 in) without brackets; AP 4.54 kg (10.0 lb); bracket 1.72 kg (3.8 lb)
IP Rating: IP65/IP67 only with CW-ACC-9179-B-00 Outdoor Environment Pack installed
Operating Temperature: -20C to 60C (excluding solar load); -20C to 50C (including solar load)
✔ Pros:Tri-band Wi-Fi 7 (802.11be) with 4x4 MU-MIMO on 2.4, 5 and 6 GHz and up to 24 Gbps aggregate PHY rate in quad-radio mode; Two 10G-capable multigigabit uplinks for high-density deployments; Outdoor-capable IP65/IP67 when the Outdoor Environment Pack is installed; WPA3 and Enhanced Open security with 802.1X and multiple EAP types; Four external antenna connectors plus software-configurable integrated antenna patterns; Enhanced Limited Lifetime Warranty
✘ Cons:Requires a Cisco Networking Subscription (Essentials or Advantage) on top of hardware cost; Street price around USD 6,300-7,000 with some list prices near USD 9,750, which is high for an AP; Full 10G uplink performance needs 802.3bt UPOE (47W), so PoE+ switches cap it at 2.5G per port; Max associated client count is not published by Cisco; Outdoor IP rating requires an extra accessory pack; Needs IOS XE 17.18.1+ with a Catalyst 9800 controller or Catalyst 9000 switch in SDA mode
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