I recently purchased a FreeAgent, model number ST305004FPA1E3-RK, last week and I've been using USB connection while waiting for the delivery of my eSATA-eSATA cable. Once I received the eSATA cable and plugged in the drive, my computer froze up and the drive constantly turned itself off and on and off (lights dim to off)...until I unplug the drive, then my computer returned to normal. After restarting the computer, my hard drive was okay while not being accessed, but when I try to use autobackup or copy files onto the drive it would start going off and on again, and it would severely lag my desktop as it did so. My motherboard supports eSATA with 2 ports in the rear (Asus P5K Deluxe) and I used a eSATA to eSATA cable, so I'm sure I'm not using the wrong hardware. USB connection works perfectly fine, but I bought this hard drive to utilize its eSATA for fast transfers.
After chatting with Seagate customer support, I was told to test it on another eSATA compatible drive or computer, or buy a replacement since the port on the drive may be bad. I have already transferred nearly 100gb of data onto the drive so I'm not willing to give up this drive yet, and that's why I'm asking for assistance in this forum. What could be the problem? Is the eSATA port on the hard-drive broken? Does anyone know how to remedy this situation? Thanks for any help!