Description
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The Olmaster Internal 5.25″ HDD/SSD Adapter Drive Bay (MR-8802) is a highly versatile internal drive bay expansion bracket designed to fit into an empty 5.25-inch optical drive bay slot of ATX, micro-ATX, or Mini-ITX computer cases. Engineered to maximise internal storage potential, this multi-functional adapter allows users to drastically increase their system’s drive capacity without requiring a larger chassis, supporting multiple 2.5-inch SATA SSDs or a combination of 2.5-inch and 3.5-inch hard drives simultaneously.
The primary purpose of a well-designed internal drive bay expansion rack is storage density optimization, system organization, and component clearance within a PC build. By converting underutilized 5.25-inch optical drive space, it provides efficient layout options for building a high-capacity DIY NAS, home server, or workstation media setup, while maintaining open airflow channels and facilitating clean cable management across high-performance hardware configurations.
Motherboard Support: Compatible with chassis built for ATX, micro-ATX, and Mini-ITX motherboard layouts that feature an available external 5.25″ drive bay.
Cooling Support: Built with high-grade engineering plastic structured to facilitate passive ventilation and optimized airflow clearance around multi-drive layouts.
Power Supply Compatibility: Formed to operate safely alongside any ATX, SFX, or SFX-L power supply cabling layout running through standard internal drive routing channels.
Included Features: Offers multiple installation configurations including 6 x 2.5″ SSD/HDD slots, or a combined arrangement of 2 x 2.5″ drives plus 1 x 3.5″ desktop hard drive, with included mounting screw sets.
In-Store Advice: Guidance on selecting the right case size, airflow design, PSU type, and cooling configuration for gaming, workstation, or compact builds.
Local Support & Advice: Assistance with component fitment, radiator placement, GPU clearance checks, and choosing compatible fans, AIOs, and accessories.
$15.00
In stock
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| Weight | .2 kg |
|---|
Compatibility: Ensure your chosen motherboard, GPU length, CPU cooler height, PSU size, and radiator dimensions fit within the case’s supported clearances.
Usage Notes: Actual airflow and cooling performance vary depending on fan configuration, radiator placement, and internal component layout.
| Feature | Specification |
| Model Number / SKU | MR-8802 |
| Case Type | Internal 5.25″ Optical Drive Bay Bracket / Conversion Rack |
| Motherboard Support | Fits cases supporting ATX / micro-ATX / Mini-ITX (with 5.25″ bay available) |
| Power Supply Support | ATX / SFX / SFX-L compatible setups |
| Maximum GPU Length | Dependent on chassis specifications |
| Maximum CPU Cooler Height | Dependent on chassis specifications |
| Radiator Support | Dependent on chassis specifications |
| Fan Support | Open structure for standard passive chassis airflow routing |
| Included Fans | None |
| Fan / ARGB Controller | Not included |
| Drive Bays | Supports up to 6 × 2.5″ drives (7-15mm thickness) OR 1 × 3.5″ drive + 2 × 2.5″ drives |
| Expansion Slots | N/A (occupies 1 × standard 5.25″ optical drive bay) |
| Front I/O | N/A |
| Materials | High-durability Engineering Plastic |
| Dimensions | 15 x 15 x 5 cm |



