Atomos Master Caddy II (ATOMCAD112, 5-Pack) — Editorial Review & Use Cases
The Atomos Master Caddy II (ATOMCAD112) is the official 2.5" SSD / HDD enclosure caddy for Atomos Ninja and Shogun recording monitors — the physical sled that holds a 2.5" SATA SSD inside the recorder and surfaces it through Atomos's docking interface. Per Atomos's official Master Caddy II accessory page, the 5-pack provides five caddies for production teams running multi-SSD media rotations during long shoots. Each caddy holds one 2.5" 7mm or 9.5mm SSD/HDD.
Compatibility — Which Recorders Use This Caddy
The Master Caddy II is the current-generation caddy. Per Atomos's compatibility documentation:
- Compatible: Ninja V, Ninja V+, Shogun 7, Shogun Studio 2, Sumo 19, Sumo 19SE, Shogun Inferno, Ninja Inferno, Ninja Flame, Shogun Flame, Shogun Studio, Samurai Blade
- NOT compatible: Ninja Star (uses MasterDisk), older non-Caddy-II Atomos units (verify with Atomos's recorder support pages before purchase)
What the 5-Pack Master Caddy II Specifically Wins
- Bulk rotation pack for production teams — five caddies enables a rotation workflow: record on caddy 1, offload caddy 1 to LTO/RAID while shooting on caddy 2, etc. Standard practice on extended-shoot productions
- Official Atomos compatibility — uses the exact connector geometry Atomos's docks expect; third-party caddies sometimes have alignment issues
- Tool-less SSD installation — small thumbscrews hold the SSD; no precision screwdriver needed for field swaps
- Standard 2.5" SATA SSDs (7mm or 9.5mm) — works with any consumer SATA SSD: Samsung 870 EVO, Crucial MX500, SanDisk SSD Plus, etc. (Atomos publishes a recommended-media list per recorder model — verify SSD model compatibility with the specific recorder's firmware)
- Future-proof for longer shoots / higher data rates — modern SSDs (1TB / 2TB / 4TB) fit standard caddies, enabling longer record sessions per swap
Where the 5-Pack Master Caddy II Specifically Fits
- Episodic / film production with multi-day shoot schedules — caddy rotation enables continuous offload-and-shoot workflows
- Documentary teams capturing long-form ProRes / ProRes RAW from Ninja / Shogun recorders
- Multi-camera live event shoots with multiple Atomos units running simultaneously
- Rental house Atomos packages — five caddies covers a typical rental kit
- Sound stage / fixed production with dedicated Atomos recorders per camera angle
- SSD-failure backup — having spare caddies pre-loaded with SSDs avoids downtime when an SSD fails mid-shoot
Honest Limits Buyers Should Know
- SSDs are NOT included. The 5-pack provides five empty caddies — buyers supply their own 2.5" SATA SSDs. Atomos publishes a per-recorder recommended-SSD compatibility list — consult it before purchasing budget SSDs (some lower-grade SSDs can't sustain ProRes RAW data rates and cause dropped frames)
- SATA only — no NVMe. Master Caddy II uses standard SATA interface; NVMe SSDs won't fit or work. For NVMe-class data rates, step up to AtomX SSDmini or Atomos's later NVMe-class media offerings (verify per recorder)
- Caddies wear with insertions. Hot-swapping in field environments can degrade contact reliability over time; production rentals typically rotate caddies through service cycles
- Single-recorder use case primarily. Not a generic 2.5" enclosure — designed specifically for Atomos's dock interface, not for desktop USB use. To read the recorded content on a workstation, use the Atomos USB docking station (sold separately)
- The 5-pack price is similar to buying 5 singles. The bulk discount is modest; the benefit is convenience + matching kit, not significant cost savings
Where Buyers Should Look Elsewhere
- NVMe-class data rates / smaller form factor → AtomX SSDmini (Atomos's mini SSD with built-in caddy)
- CFast / SD / V-Mount workflows → cameras with native card recording; Atomos becomes an HDMI-monitor only at that point
- Single caddies → Atomos Master Caddy II singles (ATOMCAD2) for buyers needing 1-2 only
- USB / Thunderbolt workstation docks → Atomos USB 3.0 docking station (separate accessory) reads the recorded media on edit workstations
Sources & Citations
- Atomos, "Master Caddy II accessory page," atomos.com (accessed 2026-05-18)
- Newsshooter, "Atomos accessory + workflow coverage," newsshooter.com (accessed 2026-05-18)
- CineD (Cinema5D), "Atomos recorder + media coverage," cined.com (accessed 2026-05-18)
Last verified: 2026-05-18
