|Real world external hard drive benchmarks.|
Benchmark Results: Access Time And Throughput
No USB 3
Read and Write
eSATA best - fastest 94 mbytes/sec
firewire 800 - fastest 76.8 mbytes/sec
USB 2.0 and firewire 400 ~ same - fastest firewire 400 40.1 mbytes/sec
USB 2.0 Benchmark Results
One or two USB 2.0 external hard drives, USB 2.0 controllers
Fastest 38.2 MB/sec slowest 18.5 MB/sec (mbytes/sec)
USB 3.0 Speed & Drive Benchmark
flash drives - fastest 124.33 mbytes/sec
2.5" external drives - fastest 99.12 mbytes/sec
3.5" external drives - fastest 125.59 mbytes/sec
"90G at usb 2.0 ought to take..."
If the external drive is capable of, say, 38 mbytes/sec....
90 gb = 92,160 mb divided by 38 mb/sec = ~ 2425 seconds divided by 60 seconds/minute = ~ 40.4 minutes
Is your USB 2.0 support actually installed in Windows ?
If you have installed Windows from scratch, the USB 2.0 support XP with SP1 or later updates has built into it is NOT installed until AFTER you have installed the main chipset drivers for the mboard.
Look in Device Manager.
E.g. RIGHT click on My Computer - Properties - Hardware - Device Manager.
Look under USB controllers.
There should be at least one listing for an Enhanced USB controller if the USB 2.0 support has been installed.
(I'm assuming the USB 2.0 support has been enabled in the bios Setup - it is by default.)