I got a USB powered 250 zip a few weeks ago to read some files for a web client.

I use it more than I ever thought I would. Just plug it in the USB (no power cord at all) and windows (2k & up) auto-configures for it. I dont even need to carry a driver disk around with me

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MSI 875P NEO-LSR Mainboard - Intel P4C 3.0Ghz (800Mhz FSB) - 2 x OCZ PC4000 512MB DIMMs - 4 x WD800JB 80GB/8MB Cache (RAID 0+1) - SB Audigy Platinum eX - ATi Radeon 9800 Pro AIW - Sony Trinitron 19" - Windows Server 2003 Enterprise