What routers support per-device Internet bandwidth usage monitoring out of the box? (I'd prefer not to go down the route of hacking in an aftermarket firmware if I don't have to; [1],[2])We have a monthly quota that we're constantly in danger of exceeding, and it's very expensive when to go over quota. There are 4 people in the house and three times as many devices, plus guests and their devices. We need to know which people and which devices are causing the most consumption, so we can then determine what to do about it. (Exile offending devices or the offending behaviour-on-device, and/or more equitably split the cost.)Router should be both LAN (4 ports sufficient) and WiFi. Themonitoring feature needs to distinguish local traffic from external(internet) traffic. (I'm curious about local traffic stats, but don'tneed to monitor it. It's the external traffic that costs.)The existing router this will replace typically has 3 wired clientsand up to 9 wifi clients. The devices run everything from Windows toLinux to iOS to Android to I-don't-know (DS,wii).A router feature I would likeThe Asus AC3200 appears to have a very nice Traffic Analyzer Statistics page that shows exactly how many mega/gigabytes each device has used. However, in my experience the RT-N56U reported stats don't match ISP stats.  This makes me leary, and the $300 USD MSRP is not attractive for our small household.
Home router that logs per-device internet usage
wifi;networking;router
Gargoyle provides exactly what you are looking for.You did not indicate what requirements you had for speed but I would guess that lack of AC Compatibility would not be a deal breaker being how much the overages cost.Gargoyle offers a router that is pre-loaded with their firmware. Link to Product The cost is currently $85.00Specifications:802.11 B/G/N, up to 300Mbps5x 1Gbps PortWPA2, WPA and WEP supportedHere is the area where you can set a quota by IPAdditional Images of InterfaceI believe that this will meet all your requirements.