This problem has been driving me crazy for over a week now, and I would really appreciate some help.
I have a PC running Win7 Ultimate connected to my 300Mbps Wireless-N network in my office. This machine connects to the network just fine at 104Mbps (card limitation) and can copy/transfer files to/from our file servers over this wireless-n network at 12-15Mbps. Works perfectly, and I have really been enjoying Win7!!
I've just added a new ZINO HD (Dell Inspiron 400) with a Dell 1520 802.11 b/g/n wireless NIC running Win7 Pro which connects to the same wireless-n network at 216Mbps (according to the "Network and Sharing Center"). However, any files that I copy/transfer to/from the ZINO from/to the Win7 Ultimate PC or our file servers move at speeds ranging from 54Kbps to 972Kbps, and the rate sometimes goes up and down during the copy/transfer.
I have no problems with the speed of files downloaded/uploaded from/to the Internet from the ZINO over this same wireless network. The ZINO has 5-bars on the connectivity.
I have tested to make sure that all of the ZINO drivers are the latest and operating correctly. I have also played with a number of various settings on the ZINO NIC with no change, and tried various router (Linksys WRT150N) settings without luck. I have tested with the firewall(s) on and off and tried a number of other suggestions I've found on various forums, all to no avail.
Thank you in advance for any help you may be able to give.