Secondlook
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DetectedMacBook Air 13" (M1, 2020)

Know exactly what
you’re buying.

Nine hardware checks, under ten minutes, one number to negotiate to.

Start the full inspection

No install, no account. Runs on the seller’s Mac in a browser tab.

RUNNING DIAGNOSTICS
120Hz confirmed
Display
Speakers
Thermals

Detecting this Mac · Change model

What the test covers.

The wizard walks these in order. You can also open any one on its own.

Ownership locksActivation Lock, remote management, company enrolment.60 secDisplayDead pixels, uniformity, and the panel’s true refresh rate.45 secKeyboardEvery key, stuck keys, repeats and rollover.40 secTrackpadDead zones, click pressure, two-finger gestures.30 secSpeakersBlown drivers, chassis rattle, stereo balance.30 secMicrophoneRecord and play back on the spot.20 secCameraLive feed, real resolution, frame rate.20 secPortsCharging and data on every USB-C socket.3 minThermalsSustained load, throttling, cooling health.3–5 min
Run all nine in order

Three checks before you touch the keyboard.

A flawless screen means nothing if the machine still belongs to someone else. Each of these is one command, and none of them need a password.

Deal-breakerRemote managementEx-corporate Macs stay enrolled to their old employer, who can lock or wipe the machine after you pay.How to check ›Price leverBattery cyclesUnder 250 is nearly new. Past 1,000, or under 80% capacity, is a service bill you should be taking off the asking price today.Read the numbers ›Second opinionBuilt-in diagnosticsBoot to startup options, press ⌘D, and the firmware reports its own faults. We translate the codes it gives back.Decode a code ›

Most used MacBooks arrive without a charger.

AFFILIATE LINKS · SAME PRICE FOR YOU

Worth buying alongside it

The bits and pieces most second-hand Macs turn up without

Anker 67W / 100W GaN ChargerUsed Macs often turn up without a charger. A small GaN one will run an Air or a 14" Pro off a single plug.View ›Braided MagSafe 3 Cable (2m)The magnetic charging cable, for the models that take one — every 14" and 16" Pro, and the Air from M2 onward. The M1 Air and both 13" Pros charge over USB-C instead, so check yours first.View ›

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