The DGS-1210-10/10P/20/28 features a fanless design that allows for quieter operation & helps to extend the devices lifetime. While the DGS-1210-28P/52/52P feature a smart fan design that powers on after the switch reaches a certain temperature, saving energy & cutting costs without sacrificing performance. Discovery & notification D-Link Insight will track all the devices connected to the smart switch & list them by MAC, IP & switch port. Insight also provides alerts to notify you when more devices are found on the network. Each client devices operating system can also be fingerprinted. Configuration management Simple, automated configuration management creates a backup of the switch settings for easy restore. Return to the last known state or bring a device online without cumbersome configuration. Alerts Always know the status of your network through Insight alerting. Should one of your web smart switches go offline or reboot, youre immediately notified. No more guessing or waiting for an outage report. Configure smart list alerts to inform you when unexpected computers are discovered on the network. Active compliance monitoring with insight plus Windows & Mac OS clients are screened by D-Link Insight Plus, which acts as an active security sentry to validate compliance to policies on a clients operating system patch level, firewall, antivirus & anti-spyware. Reports & alerts provide you with the data you need to properly determine status & access privileges.