I require around 25 metres of CAT5E/6 ethernet cable to connect my PC with my router running across a 300 mbps fiber connection. I've tried to buy these online but most cables being advertised as gigabit cables seem to be substandard CAT5 cables which cant go over 100mbps link speed and I've had to return 2 already. I'm wondering if anyone has any recommendations for the same which are available in 25m of length.