In the early hours of September 10, 2026, the iPhone 18 Pro series was officially unveiled. As the new-generation flagship model, the new phone has once again improved its imaging capabilities. Features such as a variable aperture and higher-specification ProRes recording have further raised the limits of mobile creation. Today, the iPhone is no longer just a tool for recording daily life, but has also become a mobile productivity device in the hands of many creators. As shooting specifications continue to improve, RAW photos, 4K high-bitrate videos, and other media files are also creating an increasing demand for storage space.
Against the backdrop of an overall rise in the cost of storage chips, the iPhone 18 Pro still starts with 256GB of storage. Models with larger capacities often require an additional cost of several hundred dollars. For users who do not want to pay a premium for built-in storage but still need to meet their daily creative and data storage needs, a high-speed, portable, and secure external SSD may be a more cost-effective choice. The OSCOO MD600 Password-Protected Magnetic PSSD we are testing today is such a portable storage product, providing additional storage for the iPhone while also supporting mobile creation and data security.
Slim Magnetic Design for Portable iPhone Use
For an external storage device that is often used with an iPhone, portability and fit are usually the first factors that determine the user experience. The OSCOO MD600 features an ultra-thin round body measuring φ60×9.5mm and weighs only about 50.9g. When attached to the back of the iPhone 18 Pro, it adds almost no noticeable weight. Even when holding the phone with one hand for shooting, it does not create an awkward or heavy feeling. It also takes up almost no space when carried in a pocket or backpack.
The entire body is made from a single piece of aluminum alloy. Its metallic finish matches the design style of the iPhone 18 Pro, while the aluminum alloy also serves as a natural passive cooling structure, helping maintain stable operating temperatures without an additional fan. The magnetic module on the back provides a magnetic force of ≥10N and is fully compatible with the MagSafe ecosystem. No additional accessories are needed to attach it directly to the back of the iPhone 18 Pro. Compared with traditional portable hard drives, which require cables and can hang from the phone or get in the way while being held, the magnetic design makes external storage more flexible to use with a phone. Whether shooting while walking or recording handheld, the setup remains clean and convenient.
The front of the device features a 2.1-inch round high-definition color screen that can display the device’s working status, transfer speed, total capacity, and other information in real time. Users can clearly check storage usage without connecting the device to a phone or computer. In terms of connectivity, the MD600 is equipped with a USB 3.2 Gen2×2 Type-C interface. A C-to-C data cable is included in the package, allowing the device to be used directly with the iPhone 18 Pro. It is also compatible with more digital devices, including laptops, tablets, and cameras.
Flagship Read and Write Performance for Direct 4K ProRes Recording
For users who are accustomed to professional imaging creation with an iPhone, the read and write speed and sustained stability of external storage directly determine the upper limit of the ProRes recording experience. The OSCOO MD600 uses the USB 3.2 Gen2×2 transfer protocol, providing a total bandwidth of 20Gbps. With the support of NVMe performance, sequential read speeds can reach up to 2000MB/s, while sequential write speeds can reach up to 1800MB/s. Its performance is comparable to that of a flagship internal SSD and is fully capable of handling real-time writing of high-bitrate video.
After connecting the MD600 to the iPhone 18 Pro through the OTG function, users can directly enable 4K ProRes video recording to the external drive using the phone’s native camera app, without installing additional software. In actual recording, even during long periods of shooting high-specification ProRes footage, writing remained stable and smooth throughout, with no stuttering, dropped frames, or recording interruptions. The recorded videos were fully stored on the device and could later be directly imported into editing equipment for post-production. Thanks to the passive cooling structure of its integrated aluminum-alloy body, the device experienced only a slight temperature increase after continuous high-bitrate recording and did not slow down due to overheating. The device also features a built-in 4-in-1 electrical protection system, which can handle abnormal situations such as voltage fluctuations and static electricity, helping prevent accidental damage to the device and recorded media.
Hardware-Level Password Encryption for Data Security
For users who frequently use an iPhone to handle commercial media, work documents, and private content, the security of portable storage is not an optional feature but a core need. In particular, external SSDs are often plugged into and used with different devices. Once a device is lost or borrowed by someone else, the sensitive data stored on it may be at risk of being exposed.
The OSCOO MD600 features hardware-level password protection. Every time it is connected to a terminal device, the correct password must be verified before the internal storage can be accessed, blocking all unauthorized operations at the point of access. Unlike ordinary software-based encryption solutions, hardware-level encryption performs data processing and protection at the underlying chip level, greatly increasing the difficulty of cracking it and providing more reliable protection for important content such as commercial footage, confidential work files, and private images. Even if the device is accidentally lost, users do not need to worry about others accessing the data at will. Whether it is project footage recorded outdoors or business materials carried on the go, the device can provide reliable security protection.
Full-Scenario Compatibility and Durability for Easier Daily Use
As a portable storage device designed for mobile scenarios, broad compatibility and reliable durability are key to improving the long-term user experience. The OSCOO MD600 supports cross-platform use across major operating systems, including Windows, Mac OS, Linux, Android, iOS, and Harmony. Whether it is used with the iPhone 18 Pro for mobile creation or connected to a laptop, tablet, or digital camera to transfer media files, it supports plug-and-play use without requiring additional drivers. Switching between multiple devices is simple and convenient.
The MD600 also provides extensive protection for accidental situations that may occur during daily use and when carrying it outdoors. The body supports 1.5-meter drop protection, effectively protecting the internal storage components and data when the device accidentally falls from a desk or is bumped and shaken inside a backpack during outdoor shooting. The device also has a built-in multilingual UI supporting Chinese, English, Japanese, and German, making it easy for users with different usage habits and from different regions to get started. Together with the three-year official warranty service, it provides long-term and stable protection for both daily backups and frequent creative use.
More Than Extra Storage: A Portable Data Security Vault
After a complete hands-on experience, the biggest impression of the OSCOO MD600 is that it does not stop at the basic role of “adding external storage to the iPhone.” From its slim magnetic body designed for the MagSafe ecosystem, and its easy-to-read round smart color screen, to its flagship read and write performance capable of supporting direct recording of high-bitrate 4K ProRes footage, and its hardware-level password protection that provides data security, the MD600 fully covers the needs of iPhone 18 Pro users across the entire process, from mobile creation and media storage to private data protection. It is no longer a digital accessory that needs to be stored separately and only taken out occasionally. Instead, it can attach directly to the back of the phone and become a portable tool deeply integrated into daily shooting, business travel, office work, and data management.
The MD600 currently offers a full range of capacities from 256GB to 4TB, together with a three-year official warranty, covering different needs ranging from daily file backup and personal media storage to professional, high-frequency creative work. At a time when the cost of official iPhone storage upgrades remains high, for users who want sufficient storage space while also valuing the mobile creation experience and data security, the OSCOO MD600 is undoubtedly a highly cost-effective portable storage solution.
As smartphones gradually become the core devices for mobile creation and light office work, the standards for evaluating the value of portable storage are also changing. Truly valuable portable storage has never been simply about “how many files it can hold.” More importantly, it should provide a stable, efficient, and worry-free user experience in every situation where it is needed.
