D-Link 10 Port PoE Switch

Since 2011 I have been using two D-ink DGS-1024 unmanaged switches, along with another brand of 16 port POE switch to power my POE devices. They have worked perfectly, during this time I never had any problems with them, never had to power-cycle them, etc. Recently the other switch I was using for my POE devices had an issue, so I purchased two of these DGS-1210-28P POE switches to replace everything. They have been running with no problems since June 2, 2016, with no issues.I like the fact that every port has POE capability. I have had no issues with POE devices properly connecting to the switches.I have included two photos. Please note that the device above the switches is a Samsung phone system.Update 5 May 2018 -- Switches are still working great, been in service almost two years. Just upgraded firmware to 4.10.004 with no issues. I have the C1 hardware versionUpdate 17 February 2020 -- I am still using these switches, been in service almost four years. I note the firmware available on the D-Link web site, version 4,10.051 has a date of 2019, although I am still using version 4.10.004.Since I have had these switches I have never once had to reset them. They currently are showing uptime of over 489 days since their last reboot (they are powered via a UPS).This switch will do a lot of L2 functions, supports Radius, SNMP, etc., which I have not used; however I have used the link aggregation function to aggregate two gig ethernet ports to my Synology server, and I have also tested Spanning Tree Protocol, and it works perfectly.I did this test with my two switches to demonstrate how STP works for a friend who is using several of these switches in a commercial application where the switches are separated by considerable distance and connected via Ethernet radio links. In my case, I simply activated STP on my switches which are normally each connected via Ethernet to router, and then connected an extra Ethernet cable between the two switches. In the event any one cable was disconnected, the Ethernet packets would use the alternate links and everything stayed connected.In my friend's case, he was able to set up two switches at separate locations, each of which were connected via a Ubiquiti Ethernet radio link to a router at a third location, with a third radio Ethernet connection between the two switches. In this case, if any one radio link fails, the traffic will continue running through the other available links, and it works flawlessly.Firmware upgrade is easy and can be done from a web browser or using TFTP, and the switch also has a command line interface if so desired. The switch also has a number of security capabilities which I have not needed to use since the switches are in a residential situation and sit behind a firewall.