Adapter instead of a hard disk drive in a laptop: a complete guide

In the era of cloud storage and streaming services, the optical drive in a laptop has become an anachronism. However, many users are still forced to carry external HDDs or flash drives with them due to lack of space on the system disk. The solution to the problem lies on the surface: replace an unnecessary DVD drive with a second hard drive or SSD using a special adapter.

This modification allows you to increase storage capacity without purchasing a new device, but requires careful consideration. Not all adapters will fit all laptops, and incorrect installation may result in loss of warranty or even motherboard damage. In this guide, we will look at all the nuances: from choosing a compatible adapter to step-by-step installation, taking into account the characteristics of different brands (Asus, Lenovo, HP, Dell etc.).

Why change the drive to a hard drive?

The main reason is lack of space on the system storage. Modern games, video editing or 3D modeling programs take up tens of gigabytes, and a standard SSD 256–512 GB fills up quickly. The adapter allows:

• 📁 Install second HDD or SSD volume up to 2–5 TB (depending on adapter model)
• ⚡ Speed up the system if you connect SATA SSD instead of slow HDD (assuming the main disk remains SSD)
• 🔄 Separate data: system and programs on one disk, files on the second
• 💰 Save on buying a laptop with a large storage drive or external HDD

In addition, the adapter is cheaper than replacing the main drive with a larger model. For example, 1TB SSD costs 1.5–2 times more than HDD of the same capacity + adapter.

Types of adapters: which one to choose?

All adapters for replacing the drive are divided into two main types:

1. Standard (9.5 mm) - fits most laptops with a thick drive 9.5 mm. This is the most common option for devices Dell Latitude, HP ProBook, Lenovo ThinkPad older than 2015.
2. Ultra-thin (12.7 mm) - less common, used in some models Asus, Acer And MSI. Important: a 12.7 mm adapter will not fit into the 9.5 mm drive bay, and vice versa!

The adapters also differ in:

• 🔌 Connection interface: SATA II (up to 3 Gbps) or SATA III (up to 6 Gbps). For SSD better to choose SATA III.
• 📏 Mounting sizeNote: Some adapters require additional slides or frames to secure them in place.
• 🔧 Has a hole for extraction: Convenient if you plan to remove the disc frequently.

Warning: Some laptops (eg. MacBook Pro before 2012 or Sony VAIO) use non-standard connectors. In such cases it may be necessary backward compatible adapter or modification of the body.

How to determine the thickness of your drive?

Open Device Manager (Win + X → Device Manager), find the "DVD and CD-ROM drives" section. Copy the drive model, then look for its characteristics on the manufacturer’s website or in the database NotebookCheck. Alternatively, measure the thickness of the drive with a caliper after removal.

Compatible with laptops from different brands

Not all adapters are universal. Laptop manufacturers often use unique connectors or mounts, which complicates the choice. Below is a compatibility table for popular brands:

Brand	Notebook series	Drive thickness	Features
Lenovo	ThinkPad (T, X, L series), IdeaPad (500, 700)	9.5 mm	Requires a locking adapter Lenovo FRU. In some models you need to disable Optical Drive in BIOS.
Dell	Latitude (E5xx, E6xx), Inspiron (15, 17)	9.5 mm (less often 12.7 mm)	B Latitude often used connector Slimline SATA. Check availability of additional power.
HP	ProBook (4xx, 6xx), EliteBook (8xx, 10xx)	9.5 mm	B EliteBook the drive may need to be switched off BIOS → System Configuration.
Asus	ZenBook (UX), VivoBook (S, X)	12.7 mm (in ultrabooks)	B ZenBook Non-standard fastening is often used. It is recommended to buy adapters with a metal frame.
Acer	Aspire (E5, V3), Swift (3, 5)	9.5 or 12.7 mm	B Aspire V3 chassis modification may be required for installation SSD thick 7 mm.

⚠️ Attention: In laptops Apple MacBook (2012 and older) and some Sony VAIO A proprietary connector is used. They require specialized adapters, for example, OptiBay for MacBook Pro or VAIO Media Bay Adapter.

Step-by-step installation instructions

The process of installing an adapter instead of a disk drive can be divided into 4 stages:

1. Preparation: creating a backup copy of your data, purchasing an adapter and storage device.
2. Removing the drive: Remove the drive from the laptop.
3. Installing the adapter: Connect a new drive.
4. System setup: Disk initialization and data transfer.

Let's look at each stage in detail.

1. Preparation

• 🔋 Fully charge your laptop or connect it to the network.
• 💾 Back up your important data to an external drive.
• 🛒 Buy a compatible adapter and disk (recommended capacity: 1–2 TB for HDD, 500 GB–1 TB for SSD).
• 🔧 Prepare the tools: a Phillips screwdriver, a plastic spatula (to separate the latches), an antistatic wrist strap (optional).

2. Dismantling the drive

Most laptops have a disk drive attached with one screw on the bottom cover. Algorithm of actions:

Unplug the laptop and remove the battery (if it is removable)

Turn the laptop over and locate the drive screw (usually marked with a DVD icon)

Unscrew the screw and gently pull the drive by the front panel

If the drive does not come out, check for hidden latches (use a plastic spatula)-->

⚠️ Attention: On some models (Lenovo ThinkPad T480, Dell XPS 15) the disk drive is integrated into the case. In this case you will need complete disassembly of laptop, which is better to entrust to the service center.

3. Installation of the adapter

The installation process depends on the adapter type:

1. Remove the cover from the adapter (if equipped).
2. Connect HDD/SSD to the connector SATA on the adapter. Be guided by the keys (notches) - incorrect connection can damage the contacts.
3. Secure the drive with screws (usually included).
4. Insert the adapter into the bay instead of the drive and secure it with a screw.

Important: If the adapter does not go all the way in, don't make any effort! Most likely, you chose a model that is the wrong thickness or is not compatible with your laptop.

4. System setup

After installation:

1. Turn on your laptop and go to BIOS/UEFI (usually the key F2, Del or Esc when loading).
2. Check if the new drive appears in the partition Boot or Storage.
3. If the disk is not visible, update BIOS or check the adapter connection.
4. Boot into Windows/macOS and initialize the disk via Disk management (Win + X → Disk Management).

Top 5 adapters to replace drives in 2026

There are dozens of adapter models on the market, but we have selected 5 most reliable taking into account compatibility, build quality and user feedback:

Model	Thickness	Interface	Compatibility	Price (≈)
Sabrent EC-DFLT	9.5 mm	SATA III	Lenovo, Dell, HP, Acer	1 200–1 500 ₽
KingSpec 2nd HDD Caddy	12.7 mm	SATA III	Asus, MSI, some Sony VAIO	1 800–2 200 ₽
Nifty Drive NDD-20U3	9.5 mm	SATA III + USB 3.0	Versatile, hot pluggable	2 500–3 000 ₽
OptiBay for MacBook	9.5 mm	SATA II	MacBook Pro (2009–2012), iMac (2011–2013)	3 500–4 500 ₽
ORICO 2.5" HDD Caddy	9.5/12.7 mm	SATA III	Universal, with metal body	1 600–2 000 ₽

When choosing, pay attention to body material: Plastic adapters are cheaper but less durable. Metal (for example, ORICO or KingSpec) dissipate heat better, which is important for HDD.

Common problems and their solutions

Even with proper installation, difficulties may arise. Let's consider top 5 problems and ways to eliminate them:

• 🔴 Disk is not detected in BIOS
  Reasons: incompatible adapter, incorrect connection, disconnected SATA port in BIOS.
  Solution: check the connection, update the BIOS, enable the Compatibility Mode for SATA.
• 🔴 Laptop won't turn on after installation
  Reasons: short circuit, incompatible drive (eg NVMe instead of SATA).
  Solution: remove the adapter and test the laptop without it. If the problem persists, contact service.
• 🔴 Disk is detected but not initialized
  Reasons: damaged file system, unformatted disk.
  Solution: use DiskPart on Windows or Disk Utility in macOS for cleaning and formatting.
• 🔴 Laptop overheating
  Reasons: HDD heats up more than SSD, especially in a metal case.
  Solution: use thermal pads or install SSD instead of HDD.
• 🔴 Noise or vibration
  Reasons: poor fixation HDD, bearing wear.
  Solution: check the disk fastening, add shock-absorbing pads if necessary.

⚠️ Attention: If after installing the adapter the laptop starts turn off on its own, remove the disc immediately! This may indicate eating problems (especially true for old laptops with a weak power supply).

Alternative ways to expand memory

If replacing the drive is not possible (for example, in ultrabooks without a drive), consider alternatives:

• 🖥️ External SSD/HDD through USB 3.0/3.1 or Thunderbolt. The speed will be lower than the internal drive, but this is a universal solution.
• 🔌 M.2 SSD (if there is a free slot). In some laptops (Lenovo Yoga, Dell XPS) there is a reserve slot M.2 2242/2280.
• ☁️ Cloud storage (Google Drive, Yandex Disk, iCloud). Suitable for backups, but not for constant work with large files.
• 📱 MicroSD card (in SIM slots or separate readers). In some laptops (Asus VivoBook) has a built-in card reader.

Read/write speed comparison:

• Internal SATA SSD: 500–550 MB/s
• External SSD (USB 3.1): 400–450 MB/s
• External HDD (USB 3.0): 100–150 MB/s
• MicroSD (UHS-II): 250–300 MB/s

FAQ: answers to frequently asked questions

Can I install an NVMe SSD instead of a floppy drive?

No, it’s not possible directly. NVMe uses the interface PCIe, and the disk drive adapter works according to SATA. However, there are adapters NVMe → SATA (For example, StarTech PEXSAT34RH), but they require connection to PCIe slot, which most laptops don't have. It's better to choose SATA SSD.

Will the adapter work if the laptop already has an SSD?

Yes, the adapter works regardless of the main drive type. You can use HDD in the second slot for storing files, and SSD - for the system. The main thing is that the BIOS mode is enabled AHCI for both disks.

How to transfer the system to a new disk in an adapter?

Use cloning programs: Macrium Reflect, Clonezilla or Acronis True Image. Algorithm:

1. Connect the new drive via the adapter.
2. Launch the cloning program and select the source drive (usually C:).
3. Specify the target drive (new SSD/HDD in the adapter).
4. After cloning, swap the disks (the primary disk becomes the secondary disk and vice versa).

Will I void my warranty after installing the adapter?

Formally, yes, if opening the case is not provided for by the manufacturer. However, in practice, service centers rarely refuse warranty repairs due to replacement of the drive if the problem is not related to the adapter. To minimize risks:

• Do not damage seals or stickers on screws.
• Keep the receipt for the adapter (to prove that installation was carried out carefully).
• If the laptop is under warranty, contact a service center for installation.

Can I use an adapter to install a second drive in a MacBook?

Yes, but only in models before 2012 (MacBook Pro 13"–17", iMac 21.5"–27"). For this you need a specialized adapter, for example, OptiBay or MCE Optibay. In new MacBook (2013 and later) there is no disk drive, and the case does not allow for modifications. Alternative - external Thunderbolt SSD.