Summary: Great smart switch for the price. Has one negative, which is that the port on/speed/activity lights are above each of the ports, instead of arranged to the side. This makes it impossible to determine the status of each port by looking at the device, you have to go to the admin web page. For me this is a hassle, but for others it may not be.
Summary: Performance wise we've had no complains with the two switches we have in place. Our network traffic is pretty mild (~30 machines, ~30 VoIP phones, ~10 networked heads up displays, moderate WAN traffic, moderate internal file transfers) however they've handled everything well to date. They generate minimal heat and are actively cooled. The features are pretty standard for a smart switch in this price range and, as other have said, the web interface isn't awesome.
Summary: My switch is used heavily, all ports full (mostly), and each is connected to a server or a user running a decent networking load. The switch webpage is almost not responsive, requires several refreshes, and eventually you get through. This is fixed by resetting the switch, but that brings everything down... so not really an option. I contacted the manufacturer to find out how to add my own ssl certificate, and their answer was that it is not possible.
Summary: We have put several of these switches in place in the 24 and 48 port variety. They are a great value and work great as a web smart switch. Has all the features you could want in a model that is just a you would expect for a step up from a dumb switch without the full managed switch price.
Summary: Was very happy with this 24-port and the 8-port version of the same switch. They use the same firmware and have the same features. I purchased this because its management interface works in all browsers. (A previous reviewer said that it did not work in Firefox. However, that same review said that the device had been installed for years. Apparently it had an old version of the firmware.) It has features I could only find in much more expensive switches.
Summary: When I first got this switch, I thought that this is sure one nice looking switch. For the price, a lot of care went into assembly, fit and finish of this switch and first appearances are important. What I have found out is that it performs just as good as it looks. This switch has a robust web interface with tons of configuration options. It does port aggregation which will come in handy, along with a lot of other nice features.
Warning: this switch's firmware attempts connection to 3rd-party Cloud without opt-in/permission; no option to disable!
15 February 2014
Summary: Note, this switch's firmware repeatedly attempts to connect to their 'Napera'-based cloud service. EVEN IF you've never enabled the option, AND there's no option to DISable it. This 'feature' was introduced in a no-longer-recent firmware update. I'd contacted D-Link thru a Business Sales Rep and in writing to the company -- they acknowledge the issue, but refuse to do anything about it.