Since I had several spare laptop hard drives sitting around the house, I decided on the
Dooin USB2.0 Media Manager ($45 US). The company selling this device, USB Geek, is based in Hong Kong, China. Shipment to my location was reasonably quick, painless, and duty free.
The device is sold without a hard drive, allowing you to insert any, often inexpensive, 2.5 inch drive of your choice. I selected an 80GB hard drive, but a smaller drive would be fine for just storing images. Installing the drive involves removing four screws, inserting the drive (only fits one way), and putting the screws back in. Afterwards, charge up the battery and you're ready to go. It comes with a 100-240v charger (USA style plug requiring adapter plug elsewhere).
The card reader supports normal SD cards, but not SDHC cards. When purchasing an SD card, simply avoid the SDHC logo and it will work. Transfer speeds are limited only by the card itself. The reader will support any speed.
Operation is extremely simple. There are only two buttons, the "power" button and the "copy" button. Insert an SD card, hit the "power" button, and press "copy" to transfer images from the SD card to the hard drive. The device will turn off when finished. When you're ready to transfer the images to your computer (PC or Mac), plug in the USB cord and press power. The hard drive will appear on your computer as a normal hard drive (no software installation). The USB port will also charge the battery in the Media Manager, and will supplement the battery while the drive is being used.
I use my device both for storing images while traveling and as a spare hard drive the rest of the time to transfer files between my various computers (which is why I selected the larger 80GB hard drive). So far, it is working very well for both tasks.
stewart
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UPDATE (11/29/07): Two individuals have reported problems after formatting the hard drive in this device using the NTFS file system. The device will not copy image files from the SD card afterwards. Because of that, I now recommend using the FAT32 file system when formatting the hard drive. Of course, Windows XP and later does not provide a means to format on a hard drive larger than 32GB using FAT32. Therefore, I also recommend using hard drives smaller than 32GB unless you're familiar with the workarounds for the FAT32 limitations within later operating systems. - stewart
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