First read the following thread…
Second, if you plan on copying a large amount of data or large files do not use WiFi. You will generally get faster speed using Ethernet.
Third, make sure your using Gigabit Ethernet connections where ever possible. This includes the routers and switches on the local network.
Fourth, you will never get the advertised speed. There are many factors from the speed of your computer’s hard drive, its NIC port, the speed of the My Cloud hard drive, network overhead, etc. that will all impact copying speed. Read the following links to gain an understanding why one typically never see’s the advertised speed on a Gigabit network or their WiFi network.
http://www.tomshardware.com/reviews/gigabit-ethernet-bandwidth,2321-3.html
http://www.speedguide.net/faq/what-is-the-actual-real-life-speed-of-wireless-374
Fifth, if you are using AT&T Uverse some have reported problems (do a forum search for Uverse) with the AT&T supplied router. The workaround if you are having connection issues with the My Cloud is to place a switch inbetween the My Cloud and the AT&T supplied router.
Sixth, lets look at your hardware:
Your HP Pavallion p6710f (at least according to the base specs on HP’s website) does not have a Gigabit networking port, its 10/100 only.
The Motorola 3347-02 ADSL Modem/Router appears (per this link) to only have 802.11g/b WiFi which means you’ll get less than 54Mbps over WiFi. The four networking ports are 10/100Mbps.
So based on the hardware you’ve listed you don’t apparently actually have a Gigabit network. Which means at best you’ll be transferring data at less than 100Mbps, at worst over WiFi at less than 54Mbps.
It is NO SURPRISE you’re seeing poor copying speeds.
It would appear you need to get better networking hardware. Start by contacting AT&T and see if they have or can provide a newer router, preferably one that supports Wireless N since you already have a Wireless N Linksys adapter for your PC. You will need to ask AT&T if the new router they provide supports Gigabit networking ports. If not then you may want to invest in a separate wireless router that supports both Wireless N (or Wireless AC) and has Gigabit networking ports. If you get a router that supports Gigabit networking you will also have to get a Network card for your computer that supports Gigabit networking.
