How to safely eject a USB flash drive or external hard drive on a Mac computer

1. Quickly hide and show the Dock using the shortcut Command + Option + D，Easily hide or show the application icon bar below the desktop。 2. Invert screen colors using shortcut Command + Option + Control + 8，Switch the screen's color for a better nighttime experience or to accommodate visually impaired users。 3. Quickly view and manage running applications Command-click Tab，Ability to quickly scroll through currently running applications。at the same time，Use Command + Q Quickly exit the current application，Use Command + H Minimize application window。 4. To display the Apple logo, hold down Option in any application + Shift + K，You can type Apple Logo characters。 5. Quickly manage the Trash using Command...

Capture One 21 Pro for Mac Chinese version is a powerful RAW image processing software，Is the leader in RAW image processing software industry software! Capture One Pro 21 mac comes with a powerful RAW image converter，Able to render precise colors and reveal the finest details，And by using metadata tools，You can view and edit metedata information，You can even use metadata to control image search scope。And Capture One Pro helps you adjust and enhance your images，Change exposure and sharpness。

PDF Expert is a powerful, efficient and beautiful PDF editing tool，Ability to scroll smoothly and quickly search the first document of your choice。PDF opens instantly，Whether they are small email attachments or 2,000 page reports。 Professional annotation tools from simple change marathon editing sessions，PDF Expert lives up to its name。Powerful yet easy-to-use tools are just a click away，So you can make your mark in record time。 Read an award-winning，Lightning-fast tabbed document viewer will get you through multiple PDFs faster than ever。 Great for form filling PDF Expert provides the best experience for filling PDF forms。text field，checkbox，Radio buttons and other form elements work as you expect，and all the information you enter is saved in the form。Works well even with complex interactive forms using Javascript An easy way to sign files Signing files on Mac is easy。Just enter your name on the keyboard，PDF Expert will convert it into beautiful handwriting。Or use your Macbook’s trackpad and write with your fingers。You can even use signatures you have already created in PDF Expert for iOS。 Extensive sharing options so you don't work alone，Not PDF Expert either。When documents need to be sent to clients，colleagues and others，PDF Expert offers best-in-class support for Mac system-wide share sheets and other applications。If the application accepts PDF files，PDF Expert can put them there。 Works on all devices on any Apple device Mac，Use PDF Expert on iPad and iPhone。Use Apple's Continuity and Switching features to seamlessly transfer documents from one device to another，and continue editing where you left off。

Optimize content：Sometimes problems occur in macOS or computer components，as time goes by，they may gradually worsen，or suddenly。 Sometimes before these problems become major issues，Your Mac will send out warning signs 。You need to pay close attention to the operation of the system。We'll show you some common warning signs ，and discuss how to solve these problems in the following sections。 1.Mac won't turn on when you press the power button on your Mac，nothing happened。No power light，no sound，And the screen is completely black。 don't panic，Just try the following steps to diagnose the problem： • Check power connection，Make sure both ends are secure。Next，Check the wires for damage，Then try using a different charger or outlet。 • Check the video output cable connection to the external monitor (if applicable)。Also try increasing the brightness of your monitor，to ensure that its brightness is not too low。 • There may be something wrong with your accessory。Unplug all peripherals except keyboard and mouse，Then try to start。Plug in peripherals after reboot，see if everything is normal。 • Restart power。On a modern MacBook，Press and hold the power button for 10 seconds。If your Mac is running，It will cut power and force it to reboot。On a desktop Mac，Unplug the cable，Then wait ten seconds。Then plug in and reboot。 2.Mac gray screen during startup after turning on the power of Mac，A series of startup events will occur，until the login screen or desktop appears。But if the startup process gets stuck，no matter how long you wait，will only see a solid gray screen or a screen with symbols。 based on what you see，Follow the instructions below。 Normal gray screen If there is only a simple gray screen at startup，Please do the following： • Peripheral failure is the main cause of gray screen problem。therefore，You should remove all wired accessories，Then hold down the power button to shut down your Mac。Plug in a peripheral after every reboot to find the culprit。 • Try booting in safe mode。If your Mac completes the startup process here，Please reboot in normal mode and verify that the boot drive is functioning properly。 • If safe mode startup fails or gets stuck，then reset the NVRAM and SMC settings as previously described。 • RAM with incorrect specifications can also cause the screen to turn gray。Remove any RAM you recently added，then restart。 • Hold down Cmd on startup + R key，Restart your Mac in recovery mode。Then，Repair your boot drive using Disk Repair Utility。 gray screen，No disk icon If there is a folder with a flashing question mark on the gray screen，It means that your Mac cannot find a valid boot volume.。but，When it displays the "Do Not Enter" symbol，Indicates that your macOS installation is corrupted。 To resolve this issue： • Sometimes your Mac forgets the boot volume，and temporarily display a flashing question mark。To resolve this issue，Go to the Startup Disk pane in System Preferences，Then reselect the boot volume。 • Start your Mac in recovery mode。In the Apple menu，Check if you can see the boot volume。if not，There is probably a problem with the boot disk。Run a disk repair utility to resolve this issue。 •...