Question: By the time the system appeared at E3 2006, how many Ethernet ports was it down to?
Sentence: The initial prototype shown in May 2005 featured two HDMI ports, three Ethernet ports and six USB ports; however, when the system was shown again a year later at E3 2006, these were reduced to one HDMI port, one Ethernet port and four USB ports, presumably to cut costs.
Answer in sentence: yes