A 64GB SanDisk Ultra Dual dual USB 3.1 (USB-A and USB-C) drive with bootable installers for the last 8 "vintage" versions of OS X/macOS - all with the final updates, namely:

• macOS Catalina 10.15.7 (19H2026) July 20, 2022
• macOS Mojave 10.14.6 (18G9323) July 21, 2021
• macOS High Sierra 10.13.6 (17G14042) November 12, 2020
• macOS Sierra 10.12.6 (16G2136) September 26, 2019
• OS X El Capitan 10.11.6 (15G22010) July 9, 2018
• OS X Yosemite 10.10.5 (14F2511) July 19, 2017
• OS X Mavericks 10.9.5 (13F1911) July 18, 2016
• OS X Mountain Lion 10.8.5 (12F2560) August 13, 2015

These releases are now considered to have "vintage" status by Apple, which means that they will no longer be updated and these are the final released versions.

Use to install, re-install, upgrade to, or downgrade to any of these versions of macOS (in all languages).

Works for both older Macs with USB-A ports and newer models with USB-C ports.

Next-day tracked and insured postage (Royal Mail Tracked 24) in the UK, shipped the same day if ordered and paid by 3pm.

Any question, please ask!