Supports 2 x 2.5" SATA SSD / HDD into a single 3.5" floppy bay
Accommodates 2.5" drives with 5mm, 7mm height
Spring Clip Upgrade: Stable, Shockproof Hard Drives
Drive tray-less design for quick hot-swapping
Safety key lock mechanism to prevent accidental drive ejection
Supports SATA data and power cables with locking latches
UNESTECH ST25207 2-Bay 2.5" SATA Hard Drive Mobile Rack, specifically designed for space-constrained scenarios such as small computers, embedded systems, compact chassis, and vehicle-mounted systems. It fully utilizes the limited space of standard 3.5" drive bay or traditional floppy drive bay to accommodate two 2.5-inch SATA hard drives, enabling high-density storage expansion. All drives support hot-swappable functionality, facilitating quick installation, upgrades, and maintenance, making it an ideal choice for flexible deployment and efficient operation.


The innovative spring clip mechanism secures the hard drive firmly inside the tray with precise elastic pressure, effectively buffering vibrations and preventing loosening during insertion or removal, thereby providing a consistently stable operating environment for the drive. Additionally, this mobile rack supports hot-swapping of two 2.5" SATA SSDs and is compatible with hard drive heights ranging from 5–7 mm. It enables truly 100% tool-less installation, allowing even beginners to easily install or remove hard drives, achieving outstanding compatibility and convenience.
The safety lock design further enhances the physical protection of the hard drives. It effectively prevents accidental ejection, ensuring stable operation of the devices in mobile or vibration-prone environments. Simultaneously, it prohibits unauthorized hard drive removal, preventing data theft or illegal access and providing reliable security for sensitive information.


The hot-swap tray features independent front-facing LED indicators, providing clear visibility of the hard drive status. A steady blue light indicates normal power connection, while a blinking light signifies that the hard drive is actively reading or writing data.
The ST25207 hard drive enclosure features a locking latch designs, equipped with a 7-pin SATA data port and a 15-pin SATA power port. This design ensures a secure and reliable connection, effectively preventing accidental disconnections caused by vibration or movement, thereby guaranteeing continuous and stable power delivery and data transmission for the hard drives.

| Product Parameters |
Unestech 2Bay 2.5" SATA Hot Swap 7mm SSD Mobile Rack for 3.5" Bay
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Unestech 7mm 2.5" SATA Hot Swap Bay SSD Mounting Bracket Hard Drive Mobile Rack
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Unestech 9.5mm Industrial Module 2.5" SATA Hot Swap SSD Hdd Mobile Rack
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Unestech Metal Dual bay 2.5" SATA SSD Hdd Mobile Rack for 3.5" Drive Bay with Key Lock
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Unestech Tray-less 2Bay 2.5" Aluminum SATA Hot Swap SSD HDD Mobile Rack for 5.25" Bay
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Unestech Tray-less Aluminum 2.5" SATA Hot Swap SSD Hdd Mobile Rack for 3.5" Bay
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Unestech Tray-less 2 Bay 2.5" SATA Hot Swap SSD HDD Mobile Rack Enclosure for 3.5" Bay
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|---|---|---|---|---|---|---|---|
| Model No | ST25207 | ST82107 | ST82109 | ST2528 | ST5524 | ST2514 | ST2525AB |
| Support Drive Size | 2.5" HDD / SSD | 2.5" HDD / SSD | 2.5" HDD / SSD | 2.5" HDD / SSD | 2.5" HDD / SSD | 2.5" HDD / SSD | 2.5" HDD / SSD |
| Compatible Drive Type | SATA | SATA | SATA | SATA / SAS | SATA | SATA | SATA |
| Number of Drives | 2 | 1 | 1 | 2 | 2 | 1 | 2 |
| Max Drive Height | 5-7mm | 5-7mm | 5-9.5mm | 5-9.5mm | 7-9.5mm | 7-9.5mm | 7-9.5mm |
| Drive Bay | 3.5" drive bay | - | - | 3.5" drive bay | 5.25" drive bay | 3.5" drive bay | 3.5" drive bay |
| Host Interface | 2 x SATA 7pin | 1 x SATA 7Pin | 1 x SATA 7Pin | 2 x SATA 7pin | 2 x SATA 7pin | 1 x SATA 7Pin | 2 x SATA 7pin |
| Power Input | 2 x SATA 15Pin Power | 1 x 15Pin SATA | 1 x 15pin SATA Power | 1 x 15pin SATA Power | 2 x SATA 15Pin Power | 1 x 15pin SATA Power | 1 x 15pin SATA Power |
| Support Hot-Swap | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Support HDD Capacity | No limitation | No limitation | No limitation | No limitation | No limitation | No limitation | No limitation |
| Structure / Material | Aluminum | Aluminum and Metal | Aluminum | Metal | Aluminum | Aluminum | Aluminum |
| Transfer Rate | Up to 6Gbps | Up to 6Gbps | - | - | - | - | Up to 6Gbps |
| Drive Security | Key lock | Key lock | Key lock | Key lock | Key lock | Key lock | Key lock |
| Package Contents | Device keys screws | Device keys screws | Device keys screws | Device keys screws | Device user manual keys screws | Device user manual keys screws | Device user manual keys screws |
| Drive Activity LED Indication | - | Drive power: solid blue | Drive power: solid blue | Drive power: green | Drive power: solid blue | Drive power: solid blue | Drive power: green |
| Drive Cooling | - | - | - | Metal heat dispersion | - | - | - |
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