Apple Service Diagnostics is designed to run EFI and Mac OS X testsfrom external USB-carriers. Apple Service Diagnostics (EFI) performsdirect low-level tests of hardware for Apple computers and requires nooperating system while Apple Service Diagnostics (OS) uses the Mac OS Xto run these tests.
ASD 3S144 supports the following machines:
MacBook Pro (13-inch Early 2011)
MacBook Pro (15-inch Early 2011)
MacBook Pro (17-inch Early 2011)

Ext. Information :
Before installing the ASD in the USB-drive and testing proceduresshould be more familiar with the documentation that is included in thisrelease namely:
1. ASD Read Me Service
2. Installing ASD on a USB hard drive
3. ASD User Guide
4. ASD Test Results Guide

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