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MacBook (Late 2009 or newer) MacBook Pro (Mid 2010 or newer) MacBook Air (Late 2010 or newer) Mac mini (Mid 2010 or newer) iMac (Late 2009 or newer) Mac Pro (Mid 2010 or newer). In addition, Mac OS X can still recognize and match files to applications using file types and creator signatures. Note: Beginning with OS X 10.6 Snow Leopard, creator codes are ignored by OS X, and have been superseded internally by Apple's Uniform Type Identifier scheme. However, setting a filetype in LiveCode can still be useful for. MAC Address or media access control address is a unique ID assigned to network interface cards (NICs). It is also known as a physical or hardware address. It identifies the hardware manufacturer and is used for network communication between devices in a network segment. MAC Address usually consists of six groups of two hexadecimal digits. Mac OS X - Click About this Mac from the Apple menu at the top of your screen. Then click More Info- Software. Mac OS X 10.5 (or greater) can run 64-bit applications. Any processor that says: Intel Core 2 Duo, Intel Xeon, or PowerPC G5 are 64-bit processors. No matter how much the elementary OS team denies it, there are resemblances to.

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 ports, and each type has a unique shape. On Mac computers, USB is available with these ports, depending on your Mac model:

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 oriented 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.

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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 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 that 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 recognize 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 maker of your device, and install all available Apple software updates as well.
• If your device came with an AC power adapter, 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

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• 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.

You can type fractions in text and word processing documents in a number of ways. The simplest is to use a slash character between numbers. This also works in cases where you want your Mac to perform calculations, like in Spotlight. But you can also format the fractions nicely using baseline shifts, special fraction characters, and the math equation editors in Pages and Word.

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Check out 4 Ways To Type Fractions On a Mac at YouTube for closed captioning and more options.

Video Transcript: These are special characters that are part of like the universal character set that all computers have. So you can actually use the ¼ character, I can just click on that and this is a single character, and that should show up okay on just about any computer.Now what if you want to use a fraction that's not one of those few that have special characters. Well, you have some options. The main option, and what most people use, is just use the slash key on your keyboard. So, for instance, if I wanted to type three sevenths I would just type 3 slash 7. This is so universally used that it's okay pretty much in any circumstance to use it. Maybe with the exception of the nicest typeset things like posters or something like that. But typically you can see this everywhere. You can see this in textbooks. You can see this in examples online and everything.Now this is a very important method of doing it because it's a method that the computer understands when you're doing math calculations. So for instance I'll do Command Space to bring up Spotlight here. If I type 3/7 you can see it actually calculates the result. So in any math equation I want to definitely use this technique. So it's nice sometimes when the way that you put something to be in a nice word processing document and the way you type something into Spotlight or Calculator or some other type of app it's the same. The same characters that you type. So you can just use a slash for fractions.Now you can make things look a little bit better. For instance I can select that first character there and I can go and change it to Baseline to make it superscript and then maybe make this second character here, the second number, the Baseline subscript. That creates a nicer looking fraction. As a matter of fact you even have the option to use a different slash. So you may have noticed when I do Control Command Space and search for fractions that there's another slash there. You can see that slash is a little bit more of a diagonal line than the other one. So you can use that.There are other things that you could do. You can decide to shrink the size of these numbers a little bit. You can use the Baseline to, you know, raise and lower a little bit. Or even make the denominator default. There's lots of things that you can do. You can play around with it until you get something that looks like what you want to see. So you have that option as well.In Pages you have another option because in Pages you can do mathematical formulas using Insert, Equation. Now you think you would be able to type something like 3/7 and get a nice looking fraction. But in fact you don't. You just get 3/7. It looks like maybe it doesn't do anything special with fractions. But there's a special function there. If you do a back slash, not a regular slash but a back slash, and Frac, that's a special function, then you do curly brackets and the first number, the numerator, and then curly brackets with the second number, the denominator, you get a nice fraction. You can put any number you want in there. So thirteen seventy sevenths, for instance. Or seven hundred and seventy sevenths. You just do Insert and then you get your fraction. This is kind of like an little image here. So I can Copy that and I can say switch over to TextEdit here and Paste that in. It's going to want to make sure it's a format that can handle that. You can paste it into Mail. So you can do these cool fractions using the Insert, Equation function in Pages and then go ahead and Copy and Paste that elsewhere if you need it somewhere else.Oh, and a couple quick notes here. If you're using Microsoft Word you can also do Insert, Equation but you don't have to do any special functions there. You can just actually type 3/7 and hit Return and it will convert it to a cool little fraction there. In addition, whether you're using TextEdit, Pages, Word, whatever, if you want to type the divide symbol, like you actually want to do an equation and show divide, just hold Option and then the regular slash and then you get the division symbol.

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