http://www.zytrax.com/tech/layer_1/cables/tech_lan.htm

According to the above. 100base-TX only use pin 1, 2, 3, and 6 or 2 pairs only versus all pins for 100base-T4. But isn\'t it Linksys routers only use 100base-TX.. how come cat5e lan cable configured in pin 1,2,3 and 6 won\'t work in it? Meron kasi isang pin sa 30 meters cable ko sira.. so I make sure pin 1,2,3 and 6 working while 7 and 8 not functioning.. pero the Linksys routers specifically the e1200 cant work in 2 pairs.

So I\'d like to know what routers use 100base-TX and which use 100base-T4.. and how come 2 pairs cat5e cable won\'t work in the 100base-TX Linksys e1200.. are there other uses for the other unused 2 pairs?