ethernet cable wont fit in motherboard

[Harrya12]

Hello i just got the asus m5a78l le motherboard and when i went to put my ethernet cable in it wouldn't fit, so if anyone knows why it doesn't fit please let me know thanks.

 

[USAFRet]

There appears to be an RJ-45 jack on the back, so maybe something else is the issue.

 

[Tradesman1]

Are you trying an ethernet (RJ-45 8 wire) or a 4 pin phone RJ-11 4 wire?

 

[Emerald]

are you sure you mounted you motherboard correctly into the back-shield?