Whoever takes on computers of friends or co-workers had one day be faced with a tired mother board on which the RJ45 had passed away With this hub usb 3 ports 3 and 1 ethernet jack I could work on a PC with no wifi (the owner not want n) and hs network jack Personally I use the regular on my MacBook Pro Debits (tested with speed Disk test) are less than less than 5% vs. a live connection A short little cable for use on fixed Pc but ideal for me I am delighted with this article.