I have a Mac-Mini, a Macbook Pro, 2 HP Laptops, 1 Gateway desktop PC, two Iphones, one Android, 4 Rokus, 1 Tivo, 1 Tablet, 1 Canon Pixma printer, 1 HP printer, and 1 Amazon Firestick connected to my E2500 wirelessly. I also have an Obi202 VoIP adapter hardwired to one of the ethernet ports. It handles all of these devices with no problem. Whoever said 6 or 8 or 10 is mistaken.
The default setting is 100 devices (including the 4 wired ports), but you can change that to virtually any number. However, for best results, even with dual-band, I would limit connectivity to 50 per band, but you can go higher if you choose.
Jeremy, I don't know if this will answer your question but I'll give it a try. This device has 4 Ethernet ports (no USB). Currently, we have 3 laptops, a media server, an iPhone and a Smart TV using it. Performance seems good. I've never really tested it to give you specifics. We are not heavy users of streaming video but have watched video on our Smart TV from the media server and that works well. We don't have any iPads or tablets and there are just two of us here at home. Hope this helps a bit. Feel free to reach out again if you have other questions.
Depends on a number of factors, how big is your house/apartment and what kind of network cards do your devices have. If the cant utilize the 5Ghz band then I would say around 6 on full load is about max. But with both bands you could probably do around 20.