Is anyone using a 2920 on a 100Mbps internet connection? Just want to get some feedback on any perceived bandwidth issues. We recently had a 100Mbps fibre internet circuit installed by Virgin and its currently plugged into our Zyxel USG100 but we're only achieving around 40Mbps up/down which might be down to a config issue but I suspect its probably a limitation on the router itself.

HI sorry can not comment about zyxel but have you tried their tech support?
Posting only to confirm that i am using the 2920n (n for the wi-fi model but just the 2920 is exatcly the same with out wi-fi) with VM 100mb connection at WAN 2 ,is 10-100-1000 ethernet
(superhub in modem mode - i dont have business line but that i dont think really matter) with static or dynamic ip set up in the 2920n settings
plus talk talk adsl 12mb via the TT adsl modem d-link 2680 (bridge mode) via pppoe set up, WAN 1 ,10-100 only-

i am supriced even i have qos on i am getting all the speed VM provide
http://speedtest.net/result/2015656400.png

i am not technical expert but all settings are by routers default as is too confusing for me...just set it to autobalance and both lines works great...
the router handles the connections

Bear in mind that specific software antivirus have negative effect with VM service making problem to speeds so disable them and see if you still have issues

zorab wrote: Is anyone using a 2920 on a 100Mbps internet connection? Just want to get some feedback on any perceived bandwidth issues. We recently had a 100Mbps fibre internet circuit installed by Virgin and its currently plugged into our Zyxel USG100 but we're only achieving around 40Mbps up/down which might be down to a config issue but I suspect its probably a limitation on the router itself.

Have you placed the superhub into modem mode?