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
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 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.
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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.
3GP - Third Generation Partnership Project
Format introduction:
3GP (3GPP file format) is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for 3G UMTS multimedia services. It is used on 3G mobile phones but can also be played on some 2G and 4G phones. 3G2 (3GPP2 file format) is a multimedia container format defined by the 3GPP2 for 3G CDMA2000 multimedia services. It is very similar to the 3GP file format but consumes less space & bandwidth also has some extensions and limitations in comparison to 3GP.
Technical details:
3GP and 3G2 are container formats similar to MPEG-4 Part 14 (MP4), which is also based on MPEG-4 Part 12. The 3GP and 3G2 file format were designed to decrease storage and bandwidth requirements to accommodate mobile phones. They are good for lower end smartphones for faster streaming & download.
File extension | .3gp, .3g2 |
MIME | Video/3gpp |
Developed by | 3GPP |
Type of format | Media container |
Associated programs | Windows Media Player, Apple QuickTime, VLC media player, Media Player Classic, K-Multimedia Player, Totem, RealPlayer, MPlayer, and GOM Player |
Sample file | sample.3gp |
Wikipedia | 3GP on Wikipedia |
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The list shows what formats can convert to 3GP and what formats can be converted from 3GP. Click on a link below to start a specific conversion.
# | Conversion | Position | Type |
---|---|---|---|
1 | 3GP to AVI | convert from 3GP | convert video to video |
2 | 3GP to MPEG | convert from 3GP | convert video to video |
3 | 3GP to WMV | convert from 3GP | convert video to video |
4 | 3GP to MP4 | convert from 3GP | convert video to video |
5 | 3GP to MKV | convert from 3GP | convert video to video |
6 | 3GP to M2TS | convert from 3GP | convert video to video |
7 | 3GP to WEBM | convert from 3GP | convert video to video |
8 | 3GP to FLV | convert from 3GP | convert video to video |
9 | 3GP to SWF | convert from 3GP | convert video to video |
10 | 3GP to ASF | convert from 3GP | convert video to video |
11 | 3GP to MOV | convert from 3GP | convert video to video |
12 | 3GP to M4V | convert from 3GP | convert video to video |
13 | 3GP to RM | convert from 3GP | convert video to video |
14 | 3GP to VOB | convert from 3GP | convert video to video |
15 | 3GP to OGV | convert from 3GP | convert video to video |
16 | 3GP to MP3 | convert from 3GP | convert video to audio |
17 | 3GP to WAV | convert from 3GP | convert video to audio |
18 | 3GP to OGG | convert from 3GP | convert video to audio |
19 | 3GP to WMA | convert from 3GP | convert video to audio |
20 | 3GP to AAC | convert from 3GP | convert video to audio |
21 | 3GP to FLAC | convert from 3GP | convert video to audio |
22 | 3GP to M4A | convert from 3GP | convert video to audio |
23 | 3GP to AIFF | convert from 3GP | convert video to audio |
24 | 3GP to OPUS | convert from 3GP | convert video to audio |
25 | 3GP to AMR | convert from 3GP | convert video to audio |
26 | 3GP to JPG | convert from 3GP | convert video to image |
27 | 3GP to GIF | convert from 3GP | convert video to image |
List of unpopular conversions supported:
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