Quick and Easy Guide: How to View USB Devices on Your Mac

As an avid Mac user who is constantly plugging in external USB devices like hard drives, flash drives, cameras, drawing tablets, microphones, and more, having easy visibility and access to these devices is a must. However, if you’re anything like me, you’ve probably spent your fair share of time puzzling over how to actually view your connected USB devices on a Mac.

It doesn’t have to be so mysterious! In this comprehensive guide, I’ll unravel all the intricacies of viewing, troubleshooting, and managing your precious USB gadgets on any Mac computer. With detailed, step-by-step walkthroughs and power-user tips, you’ll have the USB know-how to breeze through even the most complex connectivity and visibility challenges.

Grab your favorite external hard drive and let’s get connecting!

USB Visibility 101 – Where and How to View Your Devices

When you first plug a new USB device into your Mac, you probably expect some notification or prompt to pop up right away to indicate the device is connected. Unfortunately, that’s not always the case – so how do you actually view the device?

Here are the key locations and apps to check when trying to pinpoint newly connected USB devices:

Finder Sidebar

This is the most obvious place many users first check, but surprisingly, Finder does NOT always show connected USB devices right away. Newly plugged in external hard drives and flash drives often take 10-15 seconds to appear in the Finder sidebar, so don’t panic if you don’t see it populate instantly.

One trick is to click the Finder icon and select Preferences > Sidebar. Here you can enable the “External disks” option to force your Finder sidebar to display removable USB drives.


Similar to the Finder sidebar, the Mac desktop will display disk icons for any connected external USB drives. But again, give it several seconds for new devices to show up.

Disk Utility

For more subtle visibility, you can open the Disk Utility app and check for any new drives listed in the left sidebar. All volumes and partitions on USB devices will appear under the name of the physical drive.

System Information

For a detailed list of ALL currently connected USB devices, the System Information app is your best friend. Simply open it and navigate to USB under Hardware in the sidebar to see every USB device, hub, port, and peripheral attached to your Mac.

Now that you know the best places to uncover those hidden USB devices, let’s look at some specific scenarios in more detail.

Scenario 1 – Viewing USB Flash Drives and External Hard Drives

Flash drives and external hard drives are probably the most common USB devices that Mac users connect, so getting immediate visibility into them is critical.

Follow these steps when plugging in a new flash or hard drive:

  1. Physically insert the USB drive into your Mac’s port (may require an adapter if your Mac only has USB-C). Listen for connection sounds.
  2. Wait 10-15 seconds then check the desktop and Finder sidebar to see if the disk icon appears.
  3. If no icon appears, open Disk Utility to see if the drive shows up in the sidebar under physical disks.
  4. Launch System Information, under USB check for new device names you don’t recognize, which may be that missing drive.
  5. If STILL not visible, try plugging the drive into a different USB port on your Mac. Port issues can prevent detection.
  6. As a last resort, shut down your Mac entirely, plug in the drive, then restart. This will force a hardware re-scan.

Following this sequence should uncover any connected flash or external hard drives that aren’t automatically popping up. Be patient, and don’t assume the drive isn’t actually connected if you don’t see it instantly.

Scenario 2 – Viewing Cameras, Tablets, Phones and Other Mobile Devices

With the prevalence of smartphones, tablets, and digital cameras, viewing these mobile devices when plugged into your Mac via USB is critical for data transfers.

However, these devices often mount in different ways than typical USB drives, and may require some extra steps:

  1. Connect your phone, camera, or tablet via USB cable and wait for recognition sounds.
  2. Launch Image Capture app – your device may show up here for photo/video transfers even if not visible elsewhere.
  3. For iPhones and iPads, open iTunes – your device should be listed for syncing and backups.
  4. Use the Android File Transfer app for accessing files on Android phones and tablets.
  5. Launch Photoshop or other photo editors – your camera should be listed as an import source.
  6. For unrecognized devices, check System Information USB list for any new entries.
  7. Reconnect device to a different USB port if still not visible.

The key for mobile devices is checking specialized apps related to the device functions, rather than assuming it will appear like a normal disk drive in Finder.

Scenario 3 – USB Devices Not Showing Up At All

We’ve all experienced the frustration of connecting a new USB device, hearing the hardware recognition sound, but finding no evidence of it actually appearing on your Mac. Don’t panic yet! Here are some steps to try:

  1. Completely shut down your Mac and disconnect the problem USB device.
  2. Power your Mac back on and reconnect the USB device to the same port. See if it appears now.
  3. Try connecting the device to a different USB port or hub. Certain ports can experience issues.
  4. Check for debris or damage in the Mac’s USB ports that could block connections.
  5. Restart both the Mac and the USB device itself if possible.
  6. Update your Mac to the latest OS version and install newest USB drivers.
  7. Reset NVRAM/PRAM on your Mac to clear any USB-related caches.
  8. Try connecting the USB device on a different computer or operating system.
  9. If the device never shows up or connects anywhere, contact the manufacturer, as the device itself likely has a hardware defect.

With some diligent experimenting and process of elimination, you should be able to isolate USB issues to either the Mac, the connection, software, or the device itself.

Advanced Troubleshooting for USB Devices

If you’ve tried all the basic steps for viewing USB devices but are still encountering issues, it’s time to break out some more advanced troubleshooting techniques. Here are a few key processes I follow when USB gremlins are being stubborn:

Verify USB Controller Status

Dive back into System Information, expand the USB tree, and click on your Mac’s USB controller/hub device. Check for any reported issues or errors – these could indicate hardware problems with your USB ports themselves.

Reset SMC and NVRAM

Resetting these low-level Mac firmware settings can resolve quirky USB behavior like devices intermittently dropping off.

Follow Apple’s support guides for the proper reset steps based on your Mac model.

Create New User Accounts

Weirdly enough, I’ve fixed numerous USB mysteries simply by creating a brand new user account on the Mac and testing the device from there. This isolates the issues from any user-specific settings.

Back Up and Clean Install macOS

If all else fails, completely wiping your Mac’s operating system and performing a fresh, clean install of the latest macOS can eliminate any strange software gremlins affecting USB recognition. Just be sure to fully back up your data first!

Hopefully with these advanced tactics, you can zero in on any edge case USB issues.

Expert Tips for Safely Managing USB Devices

Beyond just visibility and connections, there are some important universal rules I follow to keep my USB devices happy and avoid any scary data loss:

Always Eject Before Disconnecting

Never yank a USB device before properly ejecting it, either by right-clicking and selecting Eject, using the Finder menu, or dragging it to the Trash. This prevents corruption.

Use Eject Keyboard Shortcuts

Enable eject shortcuts like Command+E for quick device ejecting instead of fiddling with menus. Set this in System Preferences.

Disable Auto-Mounting of Drives

For external USB hard drives, I disable auto-mounting in Finder settings. This gives me more control over when/how the drives connect.

Utilize USB Hubs

Hubs keep your ports organized and available. I use a powered hub to avoid overloading my Mac’s limited built-in ports.

Verify Transfer Completion

After moving files to an external USB drive, check the transfer actually completed before unplugging. Avoid data loss!

Follow these pro tips and your USB devices will enjoy a long, stable relationship with your Mac!

Key Takeaways for USB Success

  • Check Finder, Desktop, Disk Utility, and System Information to view USB devices
  • Mobile devices require specialized apps like Image Capture
  • Reset and restart devices and Mac to troubleshoot connectivity issues
  • Eject and unmount USB devices properly before removing
  • Advanced fixes include SMC/NVRAM resets and clean OS installs


Q: Why does my USB device keep disconnecting?

A: Try plugging the device into a different port, restarting your Mac, checking for loose connections, or updating your USB drivers. Consistent disconnects likely indicate a hardware issue.

Q: How can I tell if a USB port is USB-C or Thunderbolt 3?

A: Thunderbolt 3 ports are also USB-C compatible, but Thunderbolt ports have a little lightning icon next to them. You can use them interchangeably though!

Q: Help, I ejected a USB device but it’s still showing up!

A: If you eject a USB device but it still appears connected, try fully shutting down and restarting your Mac. This will do a full reset of all USB connections.

Kudos for making it this far! As you can see, truly mastering the nuances of USB devices on Macs takes time and practice. But you now have an exhaustive resource to level up your USB skills. Bookmark this page, and share it with any Mac-using friends who also need to brush up on connecting external devices properly.

Now turn your newfound knowledge into action by plugging in that fancy new USB gadget you just got! I wish you happy connectivity trails ahead.


  • Mira Edorra

    I'm Mira Edorra, your go-to gadget gal! I’m originally a California girl, born and raised in Silicon Valley, where people are as busy as bees, making all sorts of amazing tech stuff. But now, I live all the way over in the UK! At 32, I’m living the dream as a digital nomad, Traveling is my jam and gadgets are my peanut butter - a perfect combo, don't you think? As I bounce around the globe , I get my hands on loads of cool gizmos, and I just can't wait to share all my discoveries with you!From testing drones on mountain peaks to troubleshooting laptops in cozy cafés, my travels fuel my tech expertise. Got a gadget query? I'm your girl. Even if I don’t have the answer right away, Google and I are like Sherlock and Watson - we leave no mystery unsolved.

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