可以去:
控制台(control panel)--> 系統(system)--> 硬件hardware--> device manager --> Universal Serial Bus controllers
你會睇到成堆關於 USB 既野:(架架機都有小小唔同,下面見到既係我部機睇到既)
NEC PCI USB to Host Controller
Standard Enhanced PCI- USB Contoller <---------------注意個"Enhanced"字
USB printing device
USB root hub
USB root hub
等等.............
你只要見到其中一項有個"Enhanced"字 既 PCI- USB Contoller 就即係話你有USB 2.0
否則你就有 USB1.0 或 USB1.1
下文來自:
http://www.everythingusb.com/usb2/faq.htm
2. How do I check if my PC has USB 2.0?
You can identify whether your PC has Hi-Speed USB or not relatively easy. Open Device Manager and expand the Universal Serial Bus section. There should be an "Enhanced" USB host controller present.
Windows 98 systems may use a different name, because Hi-Speed USB drivers in these operating systems are not provided directly from Microsoft (Windows ME, 2000 and XP get their drivers through Windows Update).
These drivers are provided by the manufacturer, and may carry the maker's name (i.e. ADS, Belkin, IOGear, Siig, etc.). There should also be two "standard" version USB host controllers present as well. They are embedded in the USB chip which routes the differing USB speeds accordingly without user intervention.
另外亦要注意以下問題
第一,這是你的電腦底板USB 2.0的驅動程式出了問題,又或者是你的Windows曾經再次安裝,而安裝了一個不支持USB 2.0的版本。
如果是前者,找出你的底版驅動程式光碟,重新再安裝一次。如果是後者,請將Windows安裝一個更新的版本,例如Windows XP SP2。
第二,軟件上沒有問題,而是硬件上的問題。
你有可能將USB插在一個USB Hub分插上,而這個分插只支援USB 1.1。又或者這個USB Hub是支援USB2.0的,不過那條傳送USB線不支援USB 2.0。又或者你的一些對外分插從底板到機箱不支援USB 2.0。
如果是這種情況,你可以試一試將你的USB device直接插在機箱背後底板的USB 插,然後看看有沒有那個問題。如果發現再不存在,就乾脆由連接線到USB Hub全部換上新的支援USB 2.0傳輸部件。