DEVICE//PROOF
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LibraryComputersCMP-MAC

CMP-MAC · Used hardware protocol

MacBook inspection

Confirm battery cycles, display and port health, Apple Diagnostics, serial identity and Activation Lock on a second-hand MacBook.

Checks
15
Field time
18 min
Evidence target
Chip + memory + storage + cycle count + diagnostics + clean activation
01

Pre-meet proof

Evidence to request before you spend time travelling.

02

Physical inspection

What to inspect under bright light before powering on.

03

Function test

A short, repeatable test of the device's expensive functions.

04

Account & lock check

Confirm the next owner can activate and use the device normally.

05

Price proof

Comparable facts to record before negotiating or paying.

STOP

Walk-away signals

Pause the transaction when one of these cannot be resolved with direct evidence.

  • Remote Management appears during setup.
  • Activation Lock remains after the seller claims to have signed out.
  • The lower case rocks, the trackpad is raised, or the chassis shows swelling pressure.
  • The serial or hardware configuration does not match the listing evidence.

Safe-use boundary

Evidence helps. It does not certify the device.

DeviceProof is a general private-sale inspection aid, not an appraisal, authenticity certificate, electrical-repair guide or guarantee. Meet in a public place, keep personal passwords private, use only known-safe cables and accessories, and never bypass an owner, activation or organisation lock. Do not open mains-powered equipment or damaged batteries. Stop immediately for swelling, smoke, burning smell, exposed conductors, abnormal heat or threatening behaviour.