Portable SSDs: Start with Your Devices and File Sizes TOP5 picks

The E61 uses USB 3.2 Gen 2 and supports manufacturer-stated maximum read and write speeds of 1,050MB/s and 1,000MB/s. It is worth considering before paying more for a faster standard if you mainly transfer photo folders over a 10Gbps connection. The Korean retailer lists its weight as 52g, and it is 8.95mm thick.

The loop on the body can be used to attach the drive to a bag for storage. The manufacturer specifies IP65 dust and water resistance and drop testing from up to 3m, but these are results under defined test conditions. The drive must be kept clean and dry during use, so these ratings do not guarantee that it can be connected while wet.

The verified Korean listing specifies service through Daewon CTS and a 5-year warranty from the purchase date, excluding damage caused by the user. This makes it an option for buyers who value both portability and warranty length. When writing long video files continuously, the stated maximum speed should not be treated as the average speed for the entire task.

The T9’s key feature is USB 3.2 Gen 2x2, a 20Gbps connection. The 1TB datasheet lists maximum read and write speeds of 2,000MB/s and 1,950MB/s. The shape of a USB-C port alone does not tell you whether those speeds are available; both the computer and cable must support the standard.

Samsung explains that Dynamic Thermal Guard is designed to reduce performance loss caused by heat. It is a feature to consider for long video files, but it does not mean the maximum speed will be maintained throughout a task. The datasheet also recommends adequate airflow under heavy workloads.

At 122g with an 88×60×14mm body, it is more burdensome to carry than smaller SSDs. In return, it offers a 5-year limited warranty and includes C-to-C and C-to-A cables. The ability to connect to different computers and the conditions required to reach top speed should be considered separately.

The X9 Pro measures 65×50mm and weighs 38g, making it suitable for carrying a storage drive in a small pouch. The manufacturer announced maximum sequential read and write speeds of 1,050MB/s each, with a 10Gbps-class connection. It is a choice that trades the T9’s 20Gbps performance for portability.

Korean comparison information lists IP55 protection and a 5-year warranty. The verified retail listing is for a Daewon CTS-distributed product and specifies an after-sales service contact. There is reason to retain the service contact for the distribution channel you purchased through, alongside the warranty details.

In December 2025, Micron announced its exit from the Crucial consumer business and stated that warranty service and support for existing consumer products would continue. This does not justify assuming that support has ended, but buyers purchasing a new drive for long-term use should factor in the business change.

The EXCERIA PLUS G2 combines a 72×40×11.8mm, 42g body with a USB 3.2 Gen 2 connection. The manufacturer-stated maximum read and write speeds are 1,050MB/s and 1,000MB/s. It suits people transferring photos and documents on a 10Gbps laptop who want to reduce the bulk of their storage drive.

Both C-to-C and C-to-A cables are included, each 300mm long. This reduces what users need to prepare when alternating between computers with different connector types. However, having a Type-A port does not itself guarantee 10Gbps support, so the connected device’s specifications matter.

On October 29, 2025, KIOXIA published a firmware notice covering a critical bug fix and stability improvements. The notice concerns an update from UHFA20.1 to UHFA20.2. Before use, check the installed version and follow the official update instructions if it is the affected version.

The T7 Shield combines a rubber exterior with IP65 dust and water resistance and drop-test conditions covering heights of up to 3m. The manufacturer-stated maximum read and write speeds are 1,050MB/s and 1,000MB/s, using USB 3.2 Gen 2. It suits transferring photo and video files captured outdoors to an indoor work computer.

Samsung describes thermal management through Dynamic Thermal Guard. In a separate measured example, TechRadar’s 2022 review of the 1TB model recorded CrystalDiskMark read and write speeds of 970MB/s and 944MB/s, and a 10GB file transfer speed of 477.3MB/s. Results vary with the test method even for the same product, so maximum speeds alone make it difficult to calculate how long an extended task will take.

The body measures 88×59×13mm and weighs 98g, with a 3-year warranty for genuine units distributed in Korea. The IP65 rating and drop-test figures do not mean that all damage caused by liquids, dust, or drops is covered. The manufacturer’s stated exclusions should be reviewed to distinguish the protective design from warranty coverage.