Questions tagged [hardware]

Matters involving physical computer components, circuitry and parts, as opposed to matters of software or computer programming

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124
votes
5answers
323k views

List all devices connected, lsblk for Mac OS X

In Linux if I want to see all the devices currently connected to my computer in the command-line, I run: lsblk or blkid What's the equivalent command under Mac OS X? NOTE The goal here is ...
72
votes
10answers
36k views

What are the best practices for battery longevity?

How do you maximize the cycle count of your battery? There seems to be a debate between: Leave plugged in 24/7 but do a full cycle once a month Charge to ~100%, drain to ~10%, repeat. NOTE: Taking ...
69
votes
12answers
121k views

How can I avoid my MacBook Pro giving me minor shocks?

The aluminum Macbook Pro gives a mild shock when connected to a wall socket and charging. It only happens when I'm, for example, not wearing shoes or slippers and my feet are resting on the ground (i....
64
votes
3answers
228k views

Difference between US QWERTY and International QWERTY Apple keyboards?

What exactly is the difference between US QWERTY and International QWERTY Apple keyboards? I’m talking about the hardware keyboards specifically, not about keyboard layouts (in System Settings).
55
votes
4answers
139k views

Do MacBooks support NVMe SSD drives via the use of a Sintech adapter?

My question: Can anyone confirm or disprove the support of NVMe drives (like the Samsung 960) by the Sintech M.2 PCIe SSD MacBook adapters for macOS Sierra and High Sierra, or would you have any ...
54
votes
4answers
128k views

GPU problem - Boot Hangs on Grey Screen

I found this according to my problem in this thread: Boot hangs on grey screen (even when booting from USB drive with fresh OS X install) My MacBook Pro 15" Early 2011 with AMD Radeon HD 6750M ...
45
votes
4answers
148k views

How to disable the built-in MacBook keyboard?

Is it possible to completely disable the built-in keyboard on a MacBook? No input should be possible from that keyboard when I connect an external keyboard. This is sort of possible with the trackpad ...
43
votes
5answers
46k views

How to monitor and control thermal CPU throttling in OS X?

I recently came across the Intel Extreme Tuning Utility for Windows. I tried it under Bootcamp Windows and it was very interesting to learn in what situations my MacBook Pro's (mid2012) CPU is doing ...
42
votes
4answers
61k views

How can I find the serial number on a mac programmatically from the terminal?

What command can I use to retrieve the system's serial number from the unix command line? As uname will output some information about the software and hardware, I would like to retrieve the serial ...
36
votes
4answers
22k views

Can running `yes > /dev/null` harm a Mac?

I recently ran yes > /dev/null for a 3 minutes to drain my Mac's battery. During that time, the temperature rose to 72 °C and fans spun up to 4000 RPM. I immediately quit the process. Should I ...
35
votes
18answers
229k views

How can I remove stickers from the lid of my MacBook Pro?

I've got a MacBook Pro with Retina display and I've got a ton of stickers on it. Is there a method for removing the stickers from the back without damaging the finish and without leaving sticky ...
33
votes
6answers
13k views

How does an iOS device keep time when it is out of power?

My iPhone is always running out of battery. However, when I power it back up, the time is still in perfect synchronization. This begs the question: "How does it keep time when it is out of battery?" ...
24
votes
3answers
27k views

Solder new RAM in a 2015 Retina MacBook Pro [duplicate]

I know that the new rMBPs have no "user-serviceable" RAM. But is it possible to solder a new RAM chip onto a 2015 rMBP? Given that the technician doing this is able to install the new chip without ...
23
votes
9answers
34k views

Why does my Magic Trackpad 2 randomly disconnect and stop clicking?

Hey there fellow users, I purchased an iMac (Retina 5K, 27-Inch, 2017, macOS 10.13.4, 4.2 GHz, 32GB, 3TB Fusion Drive) less than three weeks ago, and had it delivered by Apple here in distant, little ...
22
votes
3answers
9k views

What is this button on my MacBook?

I have a 2011 MacBook. Along the left edge (looking at it from the normal typing position), near the front, there is a small silver button which is flush with the rest of the case. When pressed, a ...
21
votes
7answers
133k views

Force external display refresh rate

I have a 27" screen which is connected to my mid-2012 MacBook Pro retina through a HDMI/DVI-D (HDMI on the MacBook Pro, DVI-D on the screen). Before I was using a adapter DisplayPort+USB/DVI-D and I ...
21
votes
2answers
8k views

Why does iPhone 6 have a thick line on its edge

Apple never keeps even a dot on its hardware if it doesn't have a function. But why does the iPhone 6 have this Gap/Thick line on its edge? Any clue?
21
votes
4answers
896 views

Multi threaded CPU intensive task throttles CPU way before temperatures limits

I have written a very CPU intensive threaded task that works as expected on my 2012 MacBook Pro quad core. I turn it loose with 20 threads and the temperatures get up to about 100 °C as measured with ...
20
votes
2answers
50k views

Which macs are compatible with OS X 10.11 El Capitan?

Is there a list of officially supported Macs for OS X El Capitan? I ask to get ready if any hardware which is supported on Yosemite is not supported by El Capitan?
20
votes
3answers
5k views

My Mac is getting really slow, what should I do?

I bought a Mac (13", early 2011) almost 5 years ago. When I first got it, it was running under OS X 10.7 and it was pretty fast. I've being upgrading it ever since and it's now running under Mac OS X ...
20
votes
13answers
120k views

How to permanently disable (defective) graphics card in MacBook Pro?

My graphics card has malfunctioned and is preventing my MacBook Pro (2011) from booting. Based on my research I will have to otherwise have the logic board replaced. The defective ATI graphics card ...
20
votes
5answers
83k views

Boot hangs on grey screen (even when booting from USB drive with fresh OS X install)

My MacBook Pro 15" Late 2011 (MacBookPro8,2) with AMD Radeon 6770M exhibited display corruption and associated system crashes/resets over a period of two weeks before it entirely failed to boot. The ...
20
votes
9answers
20k views

What external hardware allows a fingerprint to login/unlock a Mac?

I own a mid-2009 MBP with OS X Mavericks installed. I'm a hi-tech enthusiast who wants to use the fingerprint scanning feature made available by many scanners on the market to login into my account ...
19
votes
1answer
5k views

What makes a MacBook much thicker or thinner?

Apple's official website says the height of a MacBook could be from "0.35 to 1.31 cm". This is a wide range, more than double thickness. I'm buying a new customized MacBook. When is it 0.35 cm thick ...
19
votes
2answers
5k views

What replaces x86 intrinsics for C when Apple ditches Intel CPUs for their own chips?

There are whole industries founded on the use of Intel Intrinsics for CPU parallelisation (with SIMD). For example, the community of Lattice QCD physicists depend on that for boost in the efficiency ...
19
votes
2answers
61k views

How to use iSight webcam without activating the green light?

Recently a the Dutch government advised to put a tape on your webcam to prevent hackers from taking pictures and video using your device (news article in Dutch). The build in iSight camera in Apple ...
19
votes
2answers
6k views

Use more than one PS4 Dualshock controller over bluetooth

I have two Playstation 4 Dualshock controllers and am thinking of getting two more. They have both bluetooth and usb connections, but prefer bluetooth to avoid cable salad — and of course to be able ...
18
votes
6answers
177k views

What Thunderbolt to USB 3.0 cables/adapters exist for OS X and Mac hardware?

I have the Late 2013 Macbook Pro, which has two USB 3.0 ports and two Thunderbolt 2 ports. I currently use both USB 3.0 ports and one TB2 port. I want to connect a third USB 3.0 device to the machine, ...
18
votes
2answers
5k views

Why does my iPhone 7 have a laser?

In the box of my iPhone 7 there was a leaflet with all sorts of small print easy enough to be dismissed as some legal document (and maybe it is). I couldn't help reading it and on the reverse page it ...
18
votes
1answer
53k views

Macbook pro display problem: orange “smudge” appears near edge

Recently there have been weird display problems on my Macbook Pro (late-2016 model with touchbar, MacOS Sierra, Intel HD graphics 530 1536 MB). Problem I have included two photos of my screen, the ...
16
votes
9answers
29k views

What is the difference between Intel and PPC?

What is the hardware and software differences between Intel and PPC Macs?
16
votes
4answers
106k views

What machines will OS X 10.10 (Yosemite) run on?

Has Apple announced which specific models of Macs will OS X 10.10 (Yosemite) run on and if so, what are they?
16
votes
5answers
16k views

Can a hobbyist or individual apply for Apple's MFi program?

I found that Apple has the MFi program to help develop a hardware for iPad/iPhone/iPod, but it looks like that only a company can apply for this program. Can a hobbyist or an individual apply for ...
15
votes
4answers
146k views

Locking an iPhone if button is broken?

My friend's iPhone's sleep/wake button no longer works. Is there any way to turn off the screen besides setting up auto-lock and waiting a few minutes?
15
votes
3answers
5k views

What happens at the user/OS level when an SSD finally wears out?

I have been reading up on SSD technology current as of 2011 and don't know of any first hand reports on what happens when an SSD eventually fails due to over use. I am most interested in the SSD that ...
15
votes
5answers
58k views

Magsafe to USB-C converter for charging Macbook Pro 2016 [duplicate]

I have a few standard MagSafe 2 chargers left and want to use it with my new MacBook 12. Are there any adapters I can use to convert these Magsafe chargers into USB-C chargers that work with the ...
14
votes
3answers
15k views

MacBook Pro 15" Retina mid 2014 random shutdowns [duplicate]

My MacBook Pro (15-inch, Retina, Mid 2014, macOS 10.13.1) shuts down randomly. It shuts down suddenly when on battery It shuts down a little more rare when connected to AC It works almost fine when ...
14
votes
6answers
17k views

Are Apple keyboards multi-key rollover?

For people who type with many fingers, are Macintosh keyboards are multi-key rollover? Bonus points for explaining how to test this on any Mac or listing which models are 3 key rollover or higher.
13
votes
4answers
14k views

Why does my Mac Pro have two ethernet ports on the back of the computer?

I'm curious as to how or why I might want to take advantage of two ethernet ports on the back of the tower?
12
votes
4answers
4k views

The iPhone is over 3 times more expensive than the iPod touch, how much more margin is Apple doing on the iPhone?

Besides small differences like a minor camera, fundamentally the difference between the iPhone the iPod touch is the GSM/CDMA antenna and I guess more battery to support the antenna. Yet the iPhone ...
12
votes
5answers
49k views

Can I use a non-Apple keyboard with OS X?

Recently I've been thinking about the idea of migrating from PC to Mac, specifically Mac Mini. The biggest issue however is hardware, since I'm not sure what will and what won't work on OS X. First ...
12
votes
5answers
15k views

Can I charge a 2017 MacBook Pro with a third-party USB C power adaptor?

I've got a 2017 MacBook Pro which comes stock with an 87W USB C Power Adapter. I want to purchase an additional power adapter, but I don't require an official Apple one. I notice that Anker make one ...
12
votes
6answers
30k views

repair an out-of-warranty Thunderbolt port

The Thunderbolt port on my trusty several-year-old MacBook Pro is failing. To connect an external display, I now have to wiggle the cable around, then pull it out a few millimeters until the contacts ...
12
votes
2answers
14k views

Where is the True Tone ambient light sensor on the 2018 MacBook Pro?

The 2018 MacBook Pro has an ambient light sensor for its True Tone display. Where exactly is this sensor? I'm hoping for a diagram so that I know where exactly to position a webcam slider cover ...
12
votes
5answers
46k views

How long will an Apple SSD last?

Like all tools, an SSD will wear out from use and eventually fail. Are there data on roughly how long the SSD's that Apple ships in it's portable line last? From my research, it seems that the ...
12
votes
5answers
18k views

Are there headset adapters usable for MacBook Pros?

I bought a headset, and it has a (obviously) male headphone input and microphone output. Problem is, MacBook Pros don't have a microphone input. Instead, they have an audio line in. However, ...
12
votes
2answers
20k views

Can I get S.M.A.R.T. support on external hard drives?

Disk Utility reports the S.M.A.R.T. Status as not verified for external disks, and by default Mac OS X only seems able to access S.M.A.R.T. information on internal hard drives. Is there a way to get ...
11
votes
4answers
1k views

What's the trivial difference between the 15“ and 17” versions of the MacBook Pro?

What can I ask on the phone to a Mac user who has a MacBook Pro (Alu), but doesn't know if it's a 15 or a 17 one (and don't have a tool to measure the screen) What can I ask him to look at to tell me ...
11
votes
2answers
6k views

Number pad does not work in vim and less

I am working from an iMac running Yosemite and using this keyboard. The number pad works in the terminal, but when I open vim or less it does not. For example using less, if I type for the number 8, ...
11
votes
3answers
4k views

Can a 16“ MacBook Pro be reverted to an OS before Catalina? [duplicate]

I want to get the new 16" Macbook Pro which ships with Catalina, but I don't want Catalina at least for now because of how many legacy apps it breaks, not to mention Avid/Protools hardware which ...

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