Developer Transition Kit (2020)

Developer Transition Kit (2020)

The Apple Developer Transition Kit is an ARM-based Mac released exclusively to registered developers on June 22, 2020. The kit was designed to aid developers in the transition from Intel (x86_64) to Apple silicon (arm64) processors as part of the Universal App Quick Start Program. The program costs 500 USD, and supplies a Developer Transition Kit that must be returned after 1 year, or if Apple decides to recall all DTKs. The Developer Transition Kit takes form as a modified Mac mini (2018).

The major external difference between the Developer Transition Kit and the Mac mini (2018) is that it contains 2 USB-C ports. They are electrically Thunderbolt 3 compatible, but this functionality is disabled on the Developer Transition Kit. It shipped with macOS Big Sur Beta 20A5299w, a build built specifically for arm64.

Application processor

The Developer Transition Kit (2020) makes use of the Apple A12Z SOC.

the A12Z is a rebranded A12X as it uses the same T8027 CPU found in the 2018 iPad Pro, with the exception that it has an improved 8-core graphics processor.

Variants

The Developer Transition Kit has a model ID of ADP3,2, and model number of A2330 (EMC 3568), J273a. This is the variant that was seeded to developers. It reports to macOS as "Apple Developer Platform"

In the macOS IPSW, there exists a variant of the Developer Transition Kit, ADP3,1 / J273, which has a nearly identical DeviceTree to ADP3,2, but the only differences are that it reports as "J273" instead of "Apple Development Platform", and only has 6 GB of RAM, like the iPad Pro 2020, instead of 16 GB, which ADP3,2 has.

Specifications

• Size: 197 mm (7.7 inches) (width) x 197 mm (7.7 inches) (length) x 36 mm (1.4 inches) (depth)
• Color: Space Grey
• Weight: 1.16 kg (2.54 lb)
• Storage: 512 GB
• RAM: 16 GB (for ADP3,2 released to developers)
• Wireless:
  • Wi-Fi: Dual-band 802.11a/​b/​g/​n/​ac
  • Bluetooth Bluetooth 5.0
• Connectors:
  • 2 x USB-C
  • 2 x USB-A
  • Gigabit Ethernet

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