There is no such speed as mps so I am going to have to guess as to what is going on.
The 100 speed is 100 Mb/s which is the speed of 100 Mb/s Ethernet. Thast is the peed that your ethenet cable connect to your router.
54 Mb/s is the speed of an 802.11g Wireless card and so that would be the speed that your PC would connect if you connected to your router using wireless. (BTW those are raw bit speeds don't expect throughput of that nature - especially with 802.11g.)
I have no idea what may go at 400 mps and didn't know that Philips still made PCs - are you sure about either/both. I suggest that you have more careful look and come back with a NEW question.
t
February 2008