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三星 Portable SSD T5 是一款最高标称速度为 540 MB/s、提供 250GB 至 2TB 容量并支持可选密码保护的便携式固态硬盘。它适合需要小巧外置存储、且手头设备能与其接口配合的用户；但 540 MB/s 是厂商规格而非实际速度保证，购买前还应核对所在市场的库存、商品状态和价格。
三星 T5 的规格是什么？
三星于 2017 年发布 T5，提供 250GB、500GB、1TB 和 2TB 四种容量。三星给出的机身尺寸为 74 × 57.3 × 10.5 mm，重量为 51 克；发布资料列出的有限保修期为三年。颜色会随容量和版本而变化，后续配色资料还包括玫瑰金和金属红。三星发布公告列出了主要规格与包装内容。
| 项目 | 三星 T5 规格 |
|---|---|
| 容量 | 250GB、500GB、1TB、2TB |
| 接口 | USB 3.1 Gen 2，最高 10Gbps |
| 最高传输速度 | 540 MB/s，厂商标称值 |
| 安全功能 | 可选密码保护；AES 256-bit 硬件加密 |
| 尺寸与重量 | 74 × 57.3 × 10.5 mm；51 克 |
| 保修 | 发布时列出的三年有限保修；具体购买地区和商品的保修条件需向卖家核实 |
三星还称 T5 支持 UASP。该接口和协议规格并不意味着所有电脑、线缆或存储任务都能达到 540 MB/s；实际表现取决于连接链路、设备和工作负载。
T5 实际有多快？
540 MB/s 是三星公布的最高速度，不是每次传输的保证。独立测试也显示，文件复制时间会因测试环境和任务而波动。El País 在 2019 年评测一款 250GB T5 时，记录了一次 40GB 文件夹复制耗时 2 分 44 秒；该文称重复传输时间约在 2 分 30 秒至 7 分钟之间。这个结果只代表该媒体当时的测试，不能直接预测你自己的传输速度。El País 的测试没有构成不同设备与连接条件下的全面对照。
#1 Best Overall
- MADE FOR THE MAKERS: Create; Explore; Store; The T7 Portable SSD delivers fast speeds and durable features to back up any endeavor; Build your video editing empire, file your photographs or back up your blogs all in an instant
- SHARE IDEAS IN A FLASH: Don’t waste a second waiting and spend more time doing; The T7 is embedded with PCIe NVMe technology that brings fast read and write speeds up to 1,050/1,000 MB/s¹, making it almost twice as fast as the T5
- ALWAYS MAKE THE SAVE: Compact design with massive capacity; With capacities up to 4TB, save exactly what you need to your drive – from large working files to game data and everything in between
- ADAPTS TO EVERY NEED: Whether using a PC or mobile phone, count on the T7 for extensive compatibility²; It’s a true team player when it comes to heavy-duty application usage or file-saving
- HI RESOLUTION VIDEO RECORDING: Record Ultra High Resolution (4K 60fs) videos directly onto the T7 Portable SSD with your favorite camera or mobile devices; Supports iPhone 15 Pro Res 4K at 60fps video and more³
因此，T5 更适合被理解为一款较早期、标称最高 540 MB/s 的便携 SSD，而不是保证持续达到该速度的设备。复制大量小文件、使用较慢的接口或线缆，以及目标设备本身的读写限制，都可能影响实际用时。
T5 能连接哪些设备？
三星发布资料称包装内附两条线：USB-C 转 USB-C，以及 USB-C 转 USB-A。这让它可以连接具有相应端口的设备，但不能据此保证与所有电脑、平板或手机兼容。购买或使用前，应核对设备端口、系统对外置存储的支持，以及手头线缆是否适用。缺少匹配端口时，接口转换也不一定能解决系统或设备层面的兼容问题。
Rank #2
- MADE FOR THE MAKERS: Create; Explore; Store; The T7 Portable SSD delivers fast speeds and durable features to back up any endeavor; Build your video editing empire, file your photographs or back up your blogs all in an instant
- SHARE IDEAS IN A FLASH: Don’t waste a second waiting and spend more time doing; The T7 is embedded with PCIe NVMe technology that brings fast read and write speeds up to 1,050/1,000 MB/s¹, making it almost twice as fast as the T5
- ALWAYS MAKE THE SAVE: Compact design with massive capacity; With capacities up to 4TB, save exactly what you need to your drive – from large working files to game data and everything in between
- ADAPTS TO EVERY NEED: Whether using a PC or mobile phone, count on the T7 for extensive compatibility²; It’s a true team player when it comes to heavy-duty application usage or file-saving
- HI RESOLUTION VIDEO RECORDING: Record Ultra High Resolution (4K 60fs) videos directly onto the T7 Portable SSD with your favorite camera or mobile devices; Supports iPhone 15 Pro Res 4K at 60fps video and more³
T5 的密码保护和 AES 加密如何理解？
三星将密码保护列为可选功能，并说明其基于 AES 256-bit 硬件加密。也就是说，不能把加密描述为出厂时默认已经启用：用户需要设置密码保护，才能按该功能的设计使用它。三星相关说明可见T5 使用说明及密码保护功能说明。
如果打算存放敏感资料，应在首次使用时检查并配置安全选项，同时妥善保存密码。现有资料不足以保证忘记密码后能够恢复盘内数据，因此不要把密码保护当作可以事后轻易撤销的设置。
Rank #3
- Superfast read write speeds: SSD with V-NAND offers ultra-fast data transfer speeds of up to 540MB s (up to 4.9x faster than external HDDs); Ideal for transferring large-sized data including 4K videos, high-resolution photos, games and more
- Compact and portable design: Top to bottom shock resistant metal design fits in the palm of your hand and easily slides in your pocket or purse to take work and entertainment on the go
- Secure encryption: Optional password protection and AES 256-bit hardware encryption keeps your personal and private data more secure
- Seamless connectivity: Includes USB type C to C and USB type C to A cables to connect to PCs, Macs, smartphones and other devices
T5 现在还值得买吗？
是否值得购买，主要看当前商品是否可靠、价格是否合适，以及你是否需要 T5 的容量与安全设置。三星英国官网的 1TB 产品页标注为“不再销售”（No longer available），但这只说明英国官网这一容量页面的状态，不能证明所有地区和容量都已停产或无货。三星英国 1TB T5 产品页可供核对该地区的页面状态。
购买二手或现货商品时，确认容量、卖家信誉、商品新旧与保修适用性，并比较当地的实际价格。没有经过核实的全球库存或统一现价，因此不能仅凭型号判断当前交易是否划算。
Rank #4
- MASSIVE STORAGE. COMPACT CONVENIENCE: We went big and made it portable; It’s the T5 EVO—an ideal choice for gamers and content creators; This SSD is engineered to handle large file transfers while still small to take on the go
- CAPACITIES THAT KEEP UP: Make a big save wherever your projects take you with the small but mighty T5 EVO; It’s light enough to take anywhere and comes with capacities of 2TB to 8TB, making it an easy way to store more on-the-go
- PICK UP THE PACE: Forget external HDDs; The T5 EVO is optimized for large file transfers with improved Intelligent TurboWrite and speeds your hard drive will be jealous of; It’s supported by USB 3.2 Gen 1 for superb performance
- ALL FOR THE SHOT: Set your sights high; This strong, sturdy sidekick will help you see it through with shock resistance and fall protection up to 6 feet*
- ADAPTS TO EVERY NEED: Whether you’re using a desktop, camera or a gaming console** count on the T5 EVO Portable SSD for extensive compatibility; It’s a true team player when it comes to heavy-duty application usage or file-saving
T5 和 T7 怎么选？
如果速度优先，可以将较新的三星 T7 纳入比较。TechRadar 的 2026 年选购文章列出 T7 最高读取 1,050 MB/s、最高写入 1,000 MB/s；T5 的三星发布规格为最高 540 MB/s。两者数字来自不同来源，且不是同条件实测，因此只能作为标称规格参考，不能直接视为实际速度对比。TechRadar 的便携 SSD 选购文章提供了 T7 的规格信息。
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| 对比项 | 三星 T5 | 三星 T7 |
|---|---|---|
| 标称速度 | 最高 540 MB/s（三星 2017 年发布规格） | 最高读取 1,050 MB/s、写入 1,000 MB/s（TechRadar 2026 年选购文章） |
| 当前价格与库存 | 未核实；按地区、容量和卖家确认 | 未核实；按地区、容量和卖家确认 |
| 同条件实测比较 | 现有资料未提供 T5 与 T7 的同条件对照测试 | |
若 T5 的价格明显更低、商品来源可信且其标称性能足够，你可以考虑它；若更看重标称速度，则应比较 T7 的实际售价、容量和接口条件，再决定是否升级。不要仅凭型号或跨来源的标称数字认定哪款对你的设备一定更快。
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