About the external features and ports on your iMac and iMac Pro

Learn about the external features and ports on iMac computers from 2012 and later and iMac Pro (2017).

iMac Pro (2017)

   

Front panel

Retina 5K display

The bright 27-inch Retina 5K display has 5120-by-2880 resolution and supports P3 wide color.

1080p FaceTime HD camera

Make FaceTime video calls or take pictures and video with the camera at the top of the display. If the light is glowing, the camera is on.

Speakers and microphones

Eliminate unwanted noise, boost your voice, and speak to Siri using the four built-in microphones. Along with the stereo speakers, the mics work to improve your FaceTime and videoconferencing experience.

Rear panel

3.5 mm headphone jack

Plug in stereo headphones to experience high-quality sound while watching movies or listening to your favorite music.

SDXC card slot

Transfer photos, videos, and data to and from your iMac Pro, with high-capacity SD cards. The SDXC card slot supports SD cards up to UHS-II performance.

USB 3 ports

Connect an iPad, iPhone, iPod, digital camera, camcorder, external storage, or printer quickly and easily. The USB 3 ports on iMac Pro support USB 3 and USB 2 devices.

Thunderbolt 3 (USB-C) ports

Connect Thunderbolt 3 and USB-C devices or displays. Or use an adapter to connect Thunderbolt 2 peripherals, a display or projector, and more.

10 Gigabit Ethernet (RJ-45) port

Nbase-T Ethernet technology supports multiple data rates for speeds up to 10 Gbit/s over standard twisted pair copper cabling up to 100 meters (328 feet) in length. Depending on the device youʼre connecting to, the cable type and technology used, and the cable length, the highest link speed is automatically negotiated. Learn more about iMac Pro Ethernet speeds.

User-installable VESA mounting bracket

You can replace the stand on your iMac Pro with a VESA mounting bracket. The VESA Mount Adapter Kit allows you to attach your iMac Pro to any VESA-compatible wall mount, desk mount, or articulating arm.

iMac computers from 2017

   

Front panel

Ambient light sensor

Your iMac uses the ambient light sensor to adjust the display's brightness based on your environment.

FaceTime HD camera

You can use the FaceTime HD camera to video chat with FaceTime for Mac over a broadband connection, take pictures using Photo Booth, or capture video through iMovie. A green indicator light turns on when the camera is in use.

Mic

The built-in microphone supports recording at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1 kHz, 48 kHz, or 96 kHz. Audio recorded from the microphone is presented as a stereo data stream with the same data on both the left and right channels. You can adjust the microphone gain from -16 dB to +30 dB.

Rear panel

3.5mm headphone jack

The headphone output supports a stereo data stream at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1 kHz or 48 kHz. The headphone output volume can be adjusted from 0.0 dB to -43.0 dB.

During playback of a 1 kHz sine wave at -3 dBFS voltage level, 24-bit sample depth, 44.1 kHz output sample rate, 100 k load (unless otherwise specified), the audio output has the following nominal specifications:

  • Jack type: 3.5 mm (1/8-inch) stereo combo
  • Maximum output voltage: 1.4 VRMS (+5.15 dBu)
  • Output impedance: <24 ohms
  • Frequency response: 20 Hz to 20 kHz, +0.5 dB/-3 dB
  • Signal-to-noise ratio (SNR): >90 dB
  • Total harmonic distortion + noise (THD+N): <-80 dB (0.007%)
  • Channel separation: >85 dB

SDXC (Secure Digital Extended Capacity) card slot 

The built-in SDXC card slot allows your iMac to read and write data to SD media. The slot accepts cards that are Standard SD (Secure Digital) 4MB–4GB, SDHC (Secure Digital High Capacity) 4GB–32GB, and SDXC (Secure Digital Extended Capacity) cards of 32GB and larger. Learn more about the SD and SDXC card slot.

USB 3 ports

Your iMac has four USB 3.0-compliant ports. You can connect compliant USB 3.0, USB 2.0, and USB 1.1 devices to these ports. Learn more about using USB devices with Mac computers.

Thunderbolt 3 (USB-C) ports

Your iMac also has two Thunderbolt 3 (USB-C) ports. Thunderbolt 3 is an I/O technology that connects devices to your computer at speeds up to 40 Gbps. Thunderbolt 3 combines data transfer, video output, and charging capabilities in a single, compact connector. It offers faster speeds than Thunderbolt 2—up to 40Gbps with a Thunderbolt 3-compatible cable. Thunderbolt 3 also supports USB 3.1 Gen 2 connectivity at up to 10Gbps, and can supply 15W of power per port to external devices.

Ethernet port (10/100/1000 Base-T)

iMac computers have a built-in Ethernet port for 10Base-T/UTP, 100Base-TX, and 1000Base-T Gigabit operation. You can connect your iMac to an Ethernet cable from a cable or DSL modem, hub, switch, or router, or to another Mac computer.

The connected device can be either a 10Base-T, 100Base-T, or 1000Base-T device. The port automatically detects which type of device you connect. You don't need to use an Ethernet crossover cable to connect to other Ethernet devices.

The Ethernet port supports the configuration of Ethernet frames larger than 1,500 MTU (Maximum Transmission Unit).

Kensington security lock slot

Secure your iMac with its Kensington lock slot, located below the power cord receptacle.

iMac computers from 2012 through 2015

   

Front panel

Ambient light sensor

Your iMac uses the ambient light sensor to adjust the display's brightness based on your environment.

Dual mics

The dual microphones operate independently from all other audio input ports and are always available. The built-in microphones support recording at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1kHz, 48kHz, or 96kHz.

Audio recorded from the microphone is presented as a stereo data stream with the same data on both the left and right channels. You can adjust the microphone gain from -16dB to +30dB.

Dual microphones enable beam-forming technology, which delivers more accuracy when using Dictation and reduces background noise for FaceTime video calls.

FaceTime HD camera

You can use the FaceTime HD camera to video chat with FaceTime for Mac over a broadband connection, take pictures using Photo Booth, or capture video through iMovie. A green indicator light turns on when the camera is in use.

Rear panel

3.5mm headphone jack: Line/headphone output

The headphone output is automatically selected for audio output if no external Sony/Philips Digital Interface Format (S/PDIF) optical digital output device is detected. The headphone output supports a stereo data stream at bit depths of 16, 20, or 24 bits per sample and at sample rates of44.1kHz or 48kHz, or 96kHz. The headphone output volume can be adjusted from 0.0dB to -43.0dB.

During playback of a 1kHz sine wave at -3dBFS voltage level, 24-bit sample depth, 44.1kHz output sample rate, 100k load (unless otherwise specified), the audio output has the following nominal specifications:

  • Jack type: 3.5 mm (1/8-inch) stereo combo
  • Maximum output voltage: 1.4VRMS (+5.15dBu)
  • Output impedance: <24 ohms
  • Frequency response: 20Hz to 20kHz, +0.5dB/-3dB
  • Signal-to-noise ratio (SNR): >90dB
  • Total harmonic distortion + noise (THD+N): <-80dB (0.007%)
  • Channel separation: >85dB

3.5mm headphone jack: S/PDIF optical digital output 

The S/PDIF optical digital output is automatically selected when an S/PDIF optical digital output device is detected on the external combination audio port. The S/PDIF optical digital output supports pulse-code modulation (PCM) and Arc Consistency Algorithm #3 (AC-3) audio formats with the following stereo data stream characteristics:

  • PCM: 16, 20, or 24 bits per sample at sample rates of 44.1kHz or 48kHz, or 96kHz
  • AC-3: 16 bits per sample at sample rates of 44.1kHz, 48kHz, 88.2kHz, 96kHz

The S/PDIF optical output channel status conforms to International Electrotechnical Commission (IEC) 60958-3 consumer mode digital audio.

During playback of a 1kHz sine wave (S/PDIF output format at 0 dBFS output level, 44.1kHz sample rate, 24-bit sample depth, unless otherwise specified), the digital audio output has the following nominal specifications:

  • Jack type: 3.5 mm (1/8-inch) stereo combo
  • Digital audio signal-to-noise ratio (SNR): >130dB
  • Digital audio total harmonic distortion + noise (THD+N): <-130dB (0.00003%)

SDXC (Secure Digital Extended Capacity) card slot 

The built-in SDXC card slot allows your iMac to read and write data to SD media. The slot accepts cards that are Standard SD (Secure Digital) 4MB–4GB, SDHC (Secure Digital High Capacity) 4GB–32GB, and SDXC (Secure Digital Extended Capacity) cards of 32GB and larger. Learn more about the SD and SDXC card slot.

USB 3 ports

Your iMac has four USB 3.0-compliant ports. You can connect compliant USB 3.0, USB 2.0, and USB 1.1 devices to these ports. Learn more about using USB devices with Mac computers.

Thunderbolt 2 ports

Your iMac also has two ports that support Thunderbolt and Thunderbolt 2. Thunderbolt is an input/output (I/O) technology that supports high-resolution displays and high-performance data devices. Thunderbolt gives you two channels on the same connector, each with 10Gbps of throughput in both directions. 

iMac models from 2014 and 2015 are equipped with Thunderbolt 2, which provides more speed—up to 20Gbps.

Thunderbolt and Thunderbolt 2 ports support these digital video output modes:

  • Mini DisplayPort output using a Mini DisplayPort to Mini DisplayPort cable (optional)
  • DVI output using a Mini DisplayPort to DVI Adapter (optional)
  • VGA output using a Mini DisplayPort to VGA Adapter (optional)
  • Dual-Link DVI output using Mini DisplayPort to Dual-Link DVI Adapter. Supports 30-inch Apple Cinema HD Display (optional)
  • HDMI audio and video output using a third-party Mini DisplayPort to HDMI Adapter
  • Target Display Mode: In this mode, some iMac systems can serve as a display for another Mac. This is supported via the Thunderbolt port using a Thunderbolt to Thunderbolt cable (not supported via a Mini DisplayPort cable).
    iMac (Retina 5K, 27-inch, Late 2014) and later iMac models can't be used as Target Display Mode displays.

Ethernet port (10/100/1000 Base-T)

iMac computers have a built-in Ethernet port for 10Base-T/UTP, 100Base-TX, and 1000Base-T Gigabit operation. You can connect your iMac to an Ethernet cable from a cable or DSL modem, hub, switch, or router, or to another Mac computer.

The connected device can be either a 10Base-T, 100Base-T, or 1000Base-T device. The port automatically detects which type of device you connect. You don't need to use an Ethernet crossover cable to connect to other Ethernet devices.

The Ethernet port supports the configuration of Ethernet frames larger than 1,500 MTU (Maximum Transmission Unit).

Kensington security lock slot

Secure your iMac with its Kensington lock slot, located below the power cord receptacle.

FaceTime is not available in all countries or regions.

Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Risks are inherent in the use of the Internet. Contact the vendor for additional information. Other company and product names may be trademarks of their respective owners.

Published Date: Wed Jan 31 23:34:53 GMT 2018