I'm using a Linksys 4 port extender (sorry, was a typo in my above post), that then connects to my Denon AVR, Denon scaler, Xbox 360, Sony S5000 Blu Ray......no connection issues and have done multiple firmware updates using this Linksys device.
I purchased from Staples for about $25.....
Denon AVR-3311CI, Denon DVP-602CI, B&K EX4420, B&K TX4430, Belkin PF60
Sony BDP-S5000ES, Silverstone HTPC (6 Tuner DVR & 10 TB Media)
PSB Stratus Minis, PSB Stratus C6, PSB Alpha S surround, James Subwoofer EMB-1200
Sharp LC-70LE755U, Harmony 880 Remote