FAQ
TL;DR: On OptiPlex 7010 DT/SFF, a 5.25-inch bay adapter lets a 3.5-inch HDD fit; "replace the optical drive with a 3.5" drive." [Elektroda, dt1, post #17224113]
Why it matters: This FAQ helps Dell OptiPlex 7010 DT/SFF owners add storage when the second 3.5-inch bay isn’t available.
Quick Facts
- The clean internal route is a 5.25-inch-to-3.5-inch adapter in place of the optical drive. [Elektroda, dt1, post #17224113]
- The secondary internal slot in this case class accepts only 2.5-inch drives. [Elektroda, ak6, post #17223979]
- USB 3.0 HDDs run slower than SATA, but are fine for backups/media. [Elektroda, dt1, post #17224174]
- Vertical HDD orientation is safe when mounted securely. [Elektroda, ak6, post #17225002]
- A 3.5-inch USB 3.0 enclosure can cost about PLN 50. [Elektroda, MarekOtt, post #17224153]
Can I add a second 3.5-inch HDD inside a Dell OptiPlex 7010 DT or SFF?
The DT/SFF chassis lacks a second native 3.5-inch bay. Use a 5.25-inch bay adapter. This replaces the optical drive and mounts the 3.5-inch HDD. It is the neatest internal solution. "replace the optical drive with a 3.5" drive." [Elektroda, dt1, post #17224113]
How do I confirm which 7010 case I have before buying brackets?
Identify DT, SFF, or MT, because bay layouts differ. In the thread, users first confirmed the housing version. If unsure, compare your chassis to Dell references and note front panel shape. Share the model type when seeking fit guidance. [Elektroda, dt1, post #17223716]
How do I mount a 3.5-inch HDD in the 5.25-inch optical bay?
Use a metal 5.25-to-3.5-inch bracket, not a plastic pocket. It improves stability and airflow.
- Remove the optical drive from the 5.25-inch bay.
- Install a 5.25-to-3.5-inch bracket and secure the HDD.
- Connect SATA data and power, then close the case.
"it was better than plastic pockets covering the drive." [Elektroda, dt1, post #17225355]
Is a USB 3.0 external HDD much slower than internal SATA?
Yes, expect lower throughput from a USB-connected HDD. USB 3.0 works well for backups and media libraries. For frequent reads/writes, internal SATA is preferable. "HDD performance via USB will be worse." [Elektroda, dt1, post #17224174]
Is it safe to mount HDDs vertically in the OptiPlex 7010?
Yes, vertical orientation is fine when the drive is mounted securely. Systems like AIOs operate drives vertically without issue. Avoid shocks while powered to protect the mechanism. "It will absolutely not be harmful." [Elektroda, ak6, post #17225002]
Does the stock blue Dell caddy accept a second 3.5-inch drive?
No. In these compact cases, the secondary slot only fits 2.5-inch drives. For a second 3.5-inch HDD, use the 5.25-inch optical bay with an adapter, or choose a 2.5-inch SSD. [Elektroda, ak6, post #17223979]
What parts and cables do I need for the 5.25-inch adapter method?
Get a 5.25-to-3.5-inch bracket, one SATA data cable, and a SATA power lead. The power cable may require an extension for reach. Route cables cleanly to prevent strain or pinching. "You may need to extend the power cord." [Elektroda, ak6, post #17224554]
Should I keep the optical drive internal or move it to USB?
If you rarely use discs, move the optical drive to USB. Free the internal 5.25-inch bay for a 3.5-inch HDD. Disc drives do not need high bandwidth. "better to connect the USB optical drive." [Elektroda, dt1, post #17224174]
Can I run a bare HDD outside the case on cables?
Yes, as a stopgap. Connect it straight to the motherboard and PSU. Secure the drive to avoid vibration and cable stress. You might need a power extension for reach. "You may need to extend the power cord." [Elektroda, ak6, post #17224554]
How much does a USB 3.0 3.5-inch enclosure cost?
About PLN 50, according to user experience in this thread. Place it close to the PC to keep cables tidy. Use it for bulk storage and backups rather than an OS drive. [Elektroda, MarekOtt, post #17224153]
What solution did someone confirm works on the 7010 DT?
A 5.25-inch bay adapter that mounts a 3.5-inch HDD solved the upgrade cleanly. The user removed the internal optical drive and connected the HDD via SATA. The system worked normally after the change. [Elektroda, MarekOtt, post #17252092]
Any airflow or front-panel tips after using a 5.25-inch adapter?
Use a solid metal adapter to help conduct heat from the HDD. Install a front dummy blank to maintain airflow and dust control. This keeps the front panel neat after removing the optical drive. "You only need a dummy plug afterwards." [Elektroda, ak6, post #17225411]
