One of the most attractive features of USB drives is the convenience with which they can be used. Most if not all modern computers come equipped with at least one USB port and it is usually simply a matter of plugging the drive into the port. Under normal circumstances, you will have immediate access to the device and the data it contains.
Usb Device For Mac
Unfortunately, circumstances are not always normal when dealing with computers and storage devices. You might be ready to view some photos your friend sent you on a flash drive when you discover that the USB drive is not showing up on your Mac.
The first thing to check if your thumb drive is not showing up on a Mac is if the problem is with the particular USB port that you are using. At the risk of stating the obvious, your first move should be to try the device in an alternate USB port available on your machine.
Your flash drive may not be registering with your Mac due to an issue of insufficient power. This is especially prone to happen if you use a bus-powered USB hub and have multiple devices connected simultaneously. Your Mac or MacBook may not be supplying enough power to adequately service all of the devices.
At WWDC 2019 Apple announced the deprecation of Kernel Extensions (KEXT) in macOS Big Sur in favor of a new driver technology in the Driver Extensions (Dext) user mode. Previously, Citrix Workspace app for Mac used the KEXT for Generic USB device redirection feature, where in any connected USB device on macOS would be redirected to the Citrix Virtual Apps and Desktops sessions in a transparent way.
Citrix HDX optimizes dedicated virtual channels, providing superior performance for selected classes of USB devices when compared to redirecting them in a generic way. This is due to the USB Protocol overhead present when using Generic USB device redirection. HDX optimized virtual channels should be used when possible. Please note, when using the device in generic mode, the device will not be available on the macOS.
The primary way to redirect a USB device into an HDX session is via the Devices menu. The Devices menu can be found in two locations in Citrix Workspace app for Mac. The first is when clicking the new Devices button on the Desktop Toolbar:
A generic USB device that is not currently redirected will appear as an enabled, unchecked menu item. A generic USB device that is currently redirected will appear as an enabled, checked menu item. An optimized USB device will appear as a disabled, checked item.
When launching a session or when plugging a new USB device into your Mac with an existing session running, Citrix Workspace app for Mac will display a notification if there are new generic USB devices that can be redirected into the session.
The USB section contains a table of the currently connected USB devices, listing their device class, name, connection state, redirection state and virtual channel mode. This is a live listing and will automatically update as devices are added or removed.
One thing to be aware of, because it might be slightly confusing at first, is that the device table will only appear if the Preferences window is opened from Citrix Viewer. If you open it from Citrix Workspace app for Mac or the menu bar icon, the table will not be available but the USB preferences below it will.
# Policy file for USB remoting## Lines are processed in order; the first match (ALLOW or DENY) is# used.## Syntax is an ordered list of case insensitive rules where# is line comment# and each rule is (ALLOW DENY) : ( match )*# and each match is (classsubclassprotvidpidrel) = hex-number# Maximum hex value for class/subclass/prot is FF, and for vid/pid/rel is FFFFDENY: vid=17e9 # All DisplayLink USB displaysDENY: class=02 # Communications and CDC-ControlDENY: class=09 # Hub devicesALLOW:vid=056a pid=0315 class=03 # Wacom Intuos tabletALLOW:vid=056a pid=0314 class=03 # Wacom Intuos tabletALLOW:vid=056a pid=00fb class=03 # Wacom DTU tabletDENY: class=03 subclass=01 prot=01 # HID Boot keyboardsDENY: class=03 subclass=01 prot=02 # HID Boot miceDENY: class=0a # CDC-DataDENY: class=0b # SmartcardDENY: class=e0 # Wireless controllerDENY: class=ef subclass=04 # Miscellaneous network devicesALLOW: # Otherwise allow everything else
Citrix Workspace app for Mac processes this file and uses it to determine if a particular USB device should be allowed to be redirected. Those of you who are familiar with Generic USB Redirection on Citrix Workspace app for Mac or for Citrix Workspace app for Windows or Citrix Workspace app for Linux will notice that it follows the same rule format.
Hello, I plugged in a usb connected to my android phone, but can't find the device on the mac. The phone recognized the connection and I mounted it, however on the mac no screen popped up or anything, and idk where to find the device so that I can't intregrate with and exchange material with my phone.
I have used a USB Stick (I'm not technical sorry) with the laptop before and set up a printer but I have never been able to find any external media devices (Iphone, Android phone, Windows phone, Ipod nano) through finder or on my desktop when they have been connected.
The Iphone has definitely worked with a Windows laptop before and as I said, I just can't find the devices in Finder. Sorry if my description is a bit erratic, i was trying all the fixes people have suggested here as I wrote it to make sure I didn't fix it. Any help would be appreciated otherwise it may be a trip to the apple store on saturday. Thanks for reading ?
I have a dbtech slider scanner connected via USB that I am trying to use and my Macbookair does not see it in devices. Devices does list however a remote disc that I do not have connected. Is this a similar problem to others listed or how do I resolve?
Okay I was having the same problem too, where I opened the Disk Utilities and nothing was there. What I simply did was downloaded an Android file transfer for Mac. The Android file transfer will show on the left hand side of the Finder window and it will also come up when the device is connected to the Mac. You can go here to download.
Now this is what i figured out. If I cant see my USB device, i go to >Utilities>Disk Utilities> [the window pops up] and i find my USB device on the left hand side. Now this is what i did; i had Finder opened and so i dragged the USB device from Disk Utilites into the left hand side of the Finder window, and then it was visible.
I am having this problem too. Opened the Disk Utilities but everything is grayed out and I can't click on anything. I JUST bought the iMAC and didn't get the disk port when I bought it. Do you have to have that to have access to the usb ports? It was charging my device, but I couldn't use it in any way.
When I connect the USB device to the Mac which is running Parallels Desktop and a Virtual Machine, it is not automatically connected to the Mac side, but instead, it connects to the virtual machine directly.
Important: The sample code featured in this document is intended to illustrate how to access a USB device from an application. It is not intended to provide guidance on error handling and other features required for production-quality code.
Applications running in OS X get access to USB devices by using I/O Kit functions to acquire a device interface, a type of plug-in that specifies functions the application can call to communicate with the device. The USB family provides two types of device interface:
Communicating with the device itself is usually only necessary when you need to set or change its configuration. For example, vendor-specific devices are often not configured because there are no default drivers that set a particular configuration. In this case, your application must use the device interface for the device to set the configuration it needs so the interfaces become available.
Find the IOUSBDevice object that represents the device in the I/O Registry. This includes setting up a matching dictionary with a key from the USB Common Class Specification (see Finding USB Devices and Interfaces). The sample code uses the key elements kUSBVendorName and kUSBProductName to find a particular USB device (this is the second key listed in Table 1-2).
Create a device interface of type IOUSBDeviceInterface for the device. This device interface provides functions that perform tasks such as setting or changing the configuration of the device, getting information about the device, and resetting the device.
The code in the USB Notification Example uses the definitions and global variables shown in Listing 2-1. The definition of USE_ASYNC_IO allows you to choose to use either synchronous or asynchronous calls to read from and write to the chip by commenting out the line or leaving it in, respectively. The definition of kTestMessage sets up a simple message to write to the device. The remaining definitions are specific to the Cypress EZ-USB chip. 2ff7e9595c
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