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HEXUS.hardware Discuss everything hardware. Need to chat tech stuff or want to tell us about the stuff in your rig? Here’s your best bet!  |
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10-12-2003, 12:11 AM
| #1 (permalink) |
| Senior Member Join Date: Jul 2003 Location: South Wales OR Southampton Uni
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| USB 2.0 Question I was just wondering what exactly *has* the USB 2.0 standard. Is it just that certain USB ports on your mobo can transfer at USB 2.0 speeds, but all USB connectors are identical. Or is it that USb 1.1 and 2.0 conectors work differently, but the 2.0 are backwards compatible ? The reason I ask, and to calrify  , is because I want to know if the USB ports on the top of my case could slow down transfer to USB 1.1 ?The basic question im asking is. Is there any actual difference between a USB 1.1 and USB 2.0 port, apart from the internal hardware on the mobo supporting USB 2.0 speeds ? Desktop: AMD Athlon XP 2500+ Barton, 1024Mb PC-3200 TwinMOS w/Winbond, MSI K7N2 Delta-ILSR, Radeon 9800SE AIW, 40 GB 7,200 Rpm Hitachi Deskstar, 120GB 7,200 Rpm 8mb Cache Maxtor Diamond 9, 160GB 7200 Rpm 8mb Cache Seagate 7200.7 SATA, Plextor 708A 8x DVD-RW, 550W PFC Q-tec PSU, Casetek 1019SM Silver Case, Camdridge Soundworks DTT2200 Speakers Laptop: Clevo D470W - 17" Widescreen TFT, Intel Pentium4 3.06Ghz 533FSB, 1024Mb PC-2700 Hynix, Radeon Mobility 9000 64Mb, Fujitsu 80Gb 4,200rpm, 250Gb 7,2000rpm 8mb Cache Maxtor OneTouch, Toshiba SD-R6372 DVD-RW +/- x4, Built-in Four speakers, webcam and microphone |
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10-12-2003, 10:35 AM
| #2 (permalink) |
| AKA Chrispynutt  Join Date: Sep 2003 Location: Fife
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| USB 2.0 is a faster version of USB, it can handle a 480 mb connection versus 1 mb for usb. Usb 1.1 is a rework of the existing usb 1 drivers so you can use usb 2.0 devices, but not at usb 2.0 speeds. Usb 2.0 can use older usb 1.1/1.0 devices just at usb1 speeds. There is also two versions of usb 2.0 products. High speed (480mb) and Full speed (12mb). The slower speed is suitable for lower powered devices that may run off batteries or be host powered (through the usb cable). As for cables I don't know, I think usb 2.0 cables are supposed to be of a higher standard, but I can't tell the difference by looking. Internal wiring maybe different. |
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10-12-2003, 05:39 PM
| #3 (permalink) |
| Homestarr Mod  Join Date: Jul 2003
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| you have to be very careful buying usb2 cables as there isent really a standard which they must pass and i have read many review on 'usb2' cables not living upto there speed. look for a good make if its very important to transfer rates |
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10-12-2003, 06:39 PM
| #4 (permalink) |
| Senior Member Join Date: Aug 2003 Location: Glasgow
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Theoretically a 40x performance increase however there is widespread evidence that this is not what is seen in practice! As far as I can make out - the connectors for USB 2.0 and 1.1 are identical. Read more here - http://www.usb.org/developers/usb20/faq20/ cheers, dave |
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