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Choose a portable SSD by adding the files you need to carry to the new material you expect to create before your next offload, then leave extra room for active work and growth. A 500GB drive may be comfortable for ordinary documents and photos, according to Seagate, but video, games, and editing projects can need substantially more. Your own file sizes—not a universal capacity rule—are the best guide.
How to calculate the capacity you need
- Measure the files you plan to keep on the SSD. Check the actual folders, including footage, photo libraries, project files, exports, and games you intend to carry.
- Estimate what you will add before you can offload or archive. Use the expected workload for that period, not just the files already on the drive.
- Allow for active work and overhead. Editing can involve source files, proxies, caches, and exports alongside the finished material. Also, formatting and other drive functions mean advertised capacity is not all available for files, as Kingston explains.
- Choose the drive’s role. A drive for transporting files may need less headroom than one holding active projects. If it contains important files, include a separate copy in your backup plan; one portable SSD alone is not a second backup.
- Compare the next suitable capacities. Pick one that covers the measured total, expected additions, and working room. Then compare connection compatibility, speed for your workflow, durability, and price.
Capacity examples by workload
Documents and photos
Seagate says 500GB may comfortably hold ordinary documents and photos. That is an orientation point, not a guarantee: file sizes, collection size, and future growth determine whether it fits. Seagate’s guidance also treats capacity, speed, ruggedness, and security as factors to weigh when choosing an external SSD.
4K video recording
Samsung’s current buying guide estimates approximately 45GB for one hour of 4K video recorded at 100Mbps. Recording time varies with camera settings and quality, so “4K” alone is not enough to predict storage. If possible, use the bitrate or file sizes from your actual camera.
Video editing projects
Raw footage is only part of an editing project: project files, proxies, caches, and exports may also take space. Lexar estimates a complete 4K project can require approximately three to four times the raw footage size, but this is a vendor planning estimate, not a rule for every editing setup. Count your own project assets and working files. Lexar also describes separating active projects from recent completed work, which can help you estimate what must stay on the drive.
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#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
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Games
Use the measured size of the installed games you expect to keep, rather than a generic count. Samsung’s capacity guide illustrates game capacity using an assumption of 100GB per game and notes that actual sizes vary.
Illustrative file counts
Kingston Technology’s 2019 chart estimates that 1TB could hold 12,800 uncompressed 24MP photos, 333,333 songs at 3MB each, or 2,083 minutes of 4K video at 30Mbps. These are calculations based on the chart’s assumptions, not promised counts for your files. Compression, formats, and actual file sizes change the result.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
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- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
When a 1TB, 2TB, or 4TB drive makes sense
These capacities are candidates to compare, not workload recommendations. A 2TB portable SSD is a reasonable search phrase if your measured files and near-term additions point to that size, but do not buy it by default. Compare 1TB if your total is smaller, or 4TB if your workload needs more room. In every case, account for usable rather than advertised capacity and leave the working space your workflow requires.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to compare after capacity
- Connection compatibility: Check the ports and connection supported by your computer, phone, or camera. A drive’s advertised speed is useful only if it suits the host connection and workflow.
- Speed: Consider how quickly you need to transfer or work with files; requirements differ between occasional transport and active editing.
- Durability and security: These matter more when the SSD travels or stores sensitive work. Check the specific model’s claims and requirements.
- Price per usable terabyte: Compare the cost against space actually available for files, not only the number printed on the box.
- Backup plan: Keep a separate copy of important data rather than relying on the portable SSD as its only home.
Samsung features its T9 Portable SSD as a product example in its buying guide; that example is not an independent comparison or evidence that the model is best for every buyer.
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Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
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