Spatial Streams (MIMO): 4x4:4 on 2.4 GHz and 4x4:4 on 5 GHz
Aggregate Throughput: 3.55 Gbps combined (up to 2.4 Gbps on 5 GHz, up to 1.15 Gbps on 2.4 GHz)
Radios (bands): Dual radio: 2.4 GHz and 5 GHz; up to 16 BSSIDs per radio
Uplink Port Speed: 2x RJ-45 HPE SmartRate ports (E0, E1), 100M/1G/2.5G/5G negotiated, 5 Gbps max
Max Clients: Up to 1,024 associated clients per radio
PoE Requirement: 802.3at (PoE+) or 802.3bt; dual-port PoE can be combined. Max draw 23.3 W (802.3at) to 26.4 W (802.3bt), varies by source
Antennas: Internal (4 antennas); external-antenna sibling is AP-534
Dimensions: 240 x 240 x 57 mm, approx. 1.27 kg without mount bracket
Ports (other): 1x USB 2.0
Management: Aruba Central / AOS-10 and Mobility Conductor (cloud or on-premises)
Curation Review
✔ Pros:Wi-Fi 6 (802.11ax) dual-band 4x4 radios with high per-client capacity; 3.55 Gbps aggregate throughput; 1,024 clients per radio suits high-density deployments; 2.5G/5G multi-gig uplink ports support modern wired backhaul; flexible 802.3at/bt PoE with dual-port power combining; internal antennas suit standard indoor ceiling installs; Wi-Fi CERTIFIED ax interoperability
✘ Cons:Power draw can exceed 802.3at budget (up to 26.4 W), so 802.3bt or power combining may be needed; aggregate throughput and power figures differ between sources, so verify on HPE's official datasheet; internal-antenna model is less flexible than the AP-534 external-antenna version; price is high relative to Wi-Fi 6E and Wi-Fi 7 alternatives; no Wi-Fi 6E 6 GHz radio, so it is limited to 2.4/5 GHz
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