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ehd

About this tag
The tag ehd on WindowsForum.com covers discussions about external hard drives (EHDs) and related performance issues. In one thread, a user reports that disabling the Enhanced Host Controller Interface (EHCI) in Device Manager resolves a scanner communication error but severely degrades EHD transfer speeds, dropping from about 30 MB/s to 700 KB/s. This highlights a common conflict between USB host controller settings and external drive performance. The tag is relevant for troubleshooting USB connectivity, driver conflicts, and optimizing transfer speeds for external storage devices on Windows systems.
  1. Joji90

    Windows 8 Scanner not working

    I have a Canon mp287 printer and scanner, when I press the scan button I get an error saying 'cannot communicate with the scanner' Link Removed (screenshot attached). I found a solution to this problem by disabling 'Enhanced host controller' under USB in device manager. Link Removed(screenshot...
    • Joji90
    • Thread
    • canon device manager ehd error performance printer scanner solutions transfer speed usb
    • Replies: 2
    • Forum: Windows Hardware
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