日本語のみで絞り込む
2024/11/18 -The device descriptor contains information about a USB device as a whole. This article describes the USB_DEVICE_DESCRIPTOR structure.
The Device Descriptor (USB_DEVICE_DESCRIPTOR) is the root of the descriptor tree and contains basic device information.
The device descriptor of a USB device represents the entire device. As a result a USB device can only have one device descriptor. It specifies some basic, yet ...
2023/6/16 -If the device isn't showing under device manager or under show hidden devices then shutdown the pc, unplug the power cable & then reconnect, ...
2024/6/20 -Started having this error when the USB i plugged in isn't working out of nowhere. It says code 43 in the properties when I checked it in the ...
2025/5/23 -The purpose of the device descriptor is to let the host know what specification of USB the device complies with and how many possible ...
Q.windows8のデバイスマネージャーに不明なデバイスが表示され、消すことが出来ません。 デスクトップのWindows8パソコンを使用しているのですが(自作です) ELECOMのカードリーダー「...
A.完全シャットダウン→電源コードを抜く→電源ボタンを押す→しばらくしてから再起動 これで治るでしょう。 Windows８は完全シャットダウンしないと履歴引き継ぎます。
Q.下記のライブラリーをimportしていますが、それらが記載されたライブラリ名が 判りません。 Q1)EclipseのプロジェクトのCLASSPATHに追加するjarファイル名を お教えください。 =
A.ch.ntb.inf.libusbJava.* ではなく、ch.ntb.usb.* ではありませんか？ 後者であれば、最新版は ch.ntb.usb-0.5.9.jar のようです。 http...
Fix Unknown USB Device - Device Descriptor Request Failed [Guide] Your USB device cannot be recognized or reports device descriptor request ...
YouTubeMDTechVideos
2023/6/16 -Have you tried a full power cycle? That is, shutdown, disconnect laptop from external power inputs, wait a minute, reconnect and boot back up.
2023/1/16 -Every 2-3 seconds I get an "Unknown USB Device (Device Descriptor Request Failed)" in the USB device manager section which then promptly goes away only to ...
2019/10/18 -You can fix unknown USB Device error by using the Hardware & DevicesTroubleshooter. To do so follow these steps.