Internal antenna models (AIR-AP2802I) offer specialized omnidirectional coverage, designed for aesthetic, low-profile ceiling mounting.
: Allows the AP to intelligently switch between 2.4-GHz/5-GHz mode and Dual 5-GHz mode based on the RF environment. 4x4 MU-MIMO
Cisco Aironet 2800 Series: High-Density Powerhouse for Enterprise Wi-Fi
remains a beast for home labs or small offices. It supports , meaning it has MU-MIMO technology to talk to multiple devices simultaneously, preventing the "lag" often felt on cheaper consumer routers.
The inclusion of in the identifier transforms this device from a simple "dumb" radio into a smart network controller.
If you are moving from a standard "Lightweight" (CAPWAP) image to this ME image, you can't just copy the file. You typically need to use the archive download-sw command via the CLI: