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Silver metal bracket converting a 3.5 inch drive bay to 5.25 inch bay with screws

Nippon Labs

Nippon Labs HDB-35525 3.5" to 5.25" HDD/SSD Mounting Bracket

SKU CH-AK9W-7DE9S MPN HDB-35525

A metal bracket converts one 3.5" drive bay into a 5.25" bay and includes eight mounting screws

  • Conversion tray1 × 3.5 in Drive to 5.25 in Bay
  • DetailsColor: Silver Material: Metal
  • Key features3.5 in HDD/SSD Mounting Bracket Lets your 3.5 in drives comp
  • Mount 3.5" drives in 5.25" bays with the conversion tray
  • Silver metal construction provides durable drive mounting
  • Eight screws included for secure bracket installation
  • Pair of mounting strips adds flexible fitting options
  • First listed March 2022 as model 35525

Drive Bay Conversion

The Nippon Labs HDB-35525 bracket lets a 3.5" hard drive or SSD fit securely into a standard 5.25" drive bay. It is built for system builders who need to add mechanical storage without sacrificing larger bay space.

Physical Bay Constraint

The adapter only works when the chassis provides a 5.25" front-access bay and the drive itself is a 3.5" form factor. Cases that lack 5.25" openings or that use tool-less rails incompatible with screw mounting cannot use this bracket.

Single Drive Capacity

Each bracket accommodates exactly one 3.5" device, so a second drive requires a second bracket and a second 5.25" bay. Buyers planning multiple drives must verify their case has enough available bays before ordering.

How it compares

Measured against everything we stock in Drive Brackets & Mounting Kits, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 81% of the 218 comparable items (median $26.99).

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Specifications

Product
Brand nameNippon Labs
Model nameHDB-35525
Size & build
Shipping weight0.11 kg
Package size193 × 180 × 39 mm
More details
Conversion tray1 × 3.5 in Drive to 5.25 in Bay

Questions about this item

Is this bracket the only version available for fitting a 3.5" drive into a 5.25" bay?

Yes, the HDB-35525 is a single conversion tray that adapts one 3.5" HDD or SSD to a standard 5.25" drive bay.

What does the 3.5" to 5.25" conversion actually do inside my case?

It lets a 3.5" drive sit securely in a larger 5.25" bay so you can use empty optical bays for extra storage.

Does the bracket use any special interface or just standard mounting holes?

It uses the standard 5.25" bay screw pattern and includes eight screws plus a pair of mounting strips for a secure fit.

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