Now you can rapidly duplicate files to USB drives on your Mac. All you need is lots of USB drives and several USB hubs! Check out the screenshots of USB Duplication on Mac. On Windows, there is a 26 drive limit. On Mac OS X, you can easily connect 50 or more drives for extremely rapid duplication of content to large numbers of removable drives.
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USB port types and names
USB (Universal Serial Bus) is an industry standard for connecting computers and other devices. It's available with many types of port, and each type has a unique shape. On Mac computers, USB is available with these ports, depending on your Mac model:
- This USB App was Reviewed and Classified under Mac OS X Portable Software Apps Portable Adium OS X Portable Adium is a Mac OS X instant messaging chat client that can be used to chat via AIM, Windows Messenger, Yahoo Messenger, Google Talk, ICQ, Jabber, Apple Mobile Me and more.
- Jul 24, 2015 An USB – at least 8Gb or higher. A MacBook to run Disk Utility in OS X. How to create USB installer for Mac OS X Step 1: Download installer of OS X Yosemite, Mavericks, Mountain Lion, and Lion We are still able to download Yosemite from Apple store: Go to Mac Apple Store use your Apple ID and login Find and download OS X Yosemite.
- Usb Duplication Software - Free Download Usb Duplication - Top 4 Download - Top4Download.com offers free. software downloads for Windows, Mac, iOS and Android computers and mobile devices. Visit for free, full and secured software’s.
- The USB Duplicator Now is software that turns your computer into a USB drive duplicator. It is a simple to use, point-and-click program. Just run the program, and it autodetects all USB drives connected to your computer, and shows them all. Select the source folder, and in a short time, all the selected USB drives will have the same contents.
USB-A
Type USB-A ports are commonly called USB, USB 2 or USB 3 ports, depending on the USB specification they support. They aren't reversible, so a USB-A connector plugs into the port only when orientated correctly.
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USB-C
Type USB-C ports are available as either standard USB-C ports or Thunderbolt 3 ports that also support USB-C connections. They both look the same, and the connector plugs into the port in either orientation.
Learn more about identifying the ports on your Mac, as well as the adapters and cables you can use to connect older devices to type USB-C ports.
USB specifications
USB specifications are important primarily when you want the most speed and power for your USB device, or your device needs more power or is using too much power. Every USB port supports a particular USB specification, which determines the port's maximum>USB specifications on MacData transferPowerUSB 3.1 Gen 2
Also known as USB 3.2 Gen 2
Up to 10 GbpsUp to 15W at 5VUSB 3.1 Gen 1
Also known as USB 3.2 Gen 1 or USB 3
Up to 5 GbpsUp to 900 mA at 5VUSB 2.0
Up to 480 MbpsUp to 500 mA at 5VUSB 1.1
Up to 12 MbpsUp to 500 mA at 5V
To learn which specification is supported by a type USB-A or type USB-C port on your Mac model:
- Choose Apple menu > About This Mac, click Support, then click Specifications.
- Check the System Information app for more details, including about USB devices connected to USB ports on your Mac. Select USB in the sidebar, then select a USB bus on the right.
Get the best performance from your USB devices
USB specifications all work with each other, but speed and power are limited by the cable or device that uses the earliest specification. For example, if you connect a USB 3 device to a USB 2 port, your device is limited to USB 2 speeds, and it can't draw more power from the port than can be delivered over USB 2. In other words, to get the best performance, make sure the USB port on your Mac and the USB cable to your device meet or exceed the USB specification of the device itself.
If your Mac doesn't recognise a USB device after you plug it into your Mac:

- Check all connections: unplug the device from your Mac, then plug it back in, and make sure that all cables and adapters are securely connected at both ends. Test with another cable or adapter, if available.
- Plug the device directly into your Mac instead of a USB hub or other device, and if necessary test with a different USB port on your Mac or device.
- Some devices need their own software, such as drivers or firmware. Others work without additional software. Check with the manufacturer of your device, and install all available Apple software updates as well.
- If your device came with an AC power adapter, you should use it. Some devices can be powered by the USB port on your Mac. Others need more power than your Mac can provide.
- Restart your Mac.
Learn more
- USB 3 devices can create wireless interference that affects Wi-Fi and Bluetooth devices. Learn how to resolve Wi-Fi and Bluetooth issues caused by wireless interference.
- Mac notebook computers with USB-C or Thunderbolt 3 can charge over that port using a compatible USB-C power adapter and cable.
How Can I Clone Bootable USB Drive
I have a bootable USB drive with Windows 7 on it. And I want to copy it to another USB drive. I was planning to simply copy and paste the files over. But my friends told me that it won't work, and I have to create an image of the bootable USB drive and restore it to another drive. Then what's the fastest and easiest way to do this job? Should I clone the USB drive to another? If so, how can I do it?
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Why You Need Clone USB Drive Rather ThanJust Copy the Files
Usually, when comes into USB drive backup, users are thinking to manually copy the files from the USB drive to the computer or another storage device. Then they can copy them back whenever they want to restore them to the USB drive. It is an efficient way if you just want to keep the personal files and documents on the USB drive. But if you want to backup your bootable USB drive, this method is not workable. You should clone USB drive with reliable free cloning software to create an exact copy of its contents, including the master boot record (MBR), slack space, and any unused space.
Steps to Clone USB Drive with EaseUS Free Cloning Software
EaseUS free backup software is effective backup software that you can rely on to clone USB drive. Working well in disk clone, the program is extremely helpful for duplicating bootable USB drive or backing up a drive's contents. It allows you to create an exact image of your USB drive and you can easily restore that image to another USB drive or the same one later. Now you can learn how to clone USB drive by this software with simple steps.
Step 1. Insert both the USB flash drives to the available USB ports on your computer. Check if Windows recognized them correctly. Now launch EaseUS Todo Backup. Let's assume that you wish to clone USB disk 1 to USB disk 2. Expand the home menu and choose 'Clone'.
Step 2. Choose the USB disk 1 as the source disk and click 'Next'.
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Step 3. Choose the USB disk 2 (with an equal size or larger size than the disk 1) as the destination disk and click 'Next'.
Step 4. Preview a disk layout and click 'Proceed'.