6 Affordable Ways to Expand Your Mac's Storage

Apple’s base model Macs offer great value, but their limited storage can fill up fast. Fortunately, there are several cost-effective options to expand your Mac’s storage without breaking the bank. Let’s explore the most practical solutions, from plug-and-play external drives to cloud-based alternatives.

External SSDs: Speed and Portability Combined

External solid-state drives (SSDs) provide an excellent balance of performance, capacity, and portability. They connect via USB-C or Thunderbolt, offering speeds that rival internal storage.

Key benefits:

  • Plug-and-play simplicity
  • Compact and portable
  • No installation required

Step 1: Choose an SSD that matches your needs for capacity and speed. Look for models supporting USB 3.2 Gen 2 or Thunderbolt 3/4 for optimal performance.

Step 2: Connect the drive to your Mac’s USB-C or Thunderbolt port.

Step 3: Format the drive using Disk Utility if needed (choose APFS for best compatibility with macOS).

Step 4: Start using the drive for file storage, Time Machine backups, or even as a boot drive for alternative operating systems.

Popular options include the Samsung T7 series, SanDisk Extreme Portable SSDs, and Crucial X8 drives. These typically offer capacities from 500GB to 4TB at much lower prices than Apple’s internal upgrades.


Network Attached Storage (NAS): Shared Storage for Your Home

A NAS device acts like a private cloud for your home network, accessible by all your devices. It’s ideal for households with multiple computers or users who need centralized file storage.

Key benefits:

  • Centralized storage for multiple devices
  • Easy file sharing and backups
  • Often includes additional features like media streaming

Step 1: Choose a NAS device from reputable brands like Synology, QNAP, or Western Digital.

Step 2: Install hard drives or SSDs into the NAS bays (if not pre-installed).

Step 3: Connect the NAS to your home network via Ethernet.

Step 4: Follow the manufacturer’s setup instructions to configure the device.

Step 5: Map the NAS as a network drive on your Mac for easy access.

While setup is more involved than a simple external drive, a NAS offers unparalleled flexibility for home networks. Many models support remote access, allowing you to reach your files from anywhere with an internet connection.


Cloud Storage: Access Your Files Anywhere

Cloud storage services provide a way to offload files from your Mac’s internal drive and access them from any device with an internet connection.

Key benefits:

  • No physical hardware required
  • Automatic syncing across devices
  • Built-in backup and version history

Step 1: Choose a cloud storage provider (e.g., iCloud, Google Drive, Dropbox, or Microsoft OneDrive).

Step 2: Sign up for an account and install the provider’s app on your Mac.

Step 3: Configure sync settings to determine which folders are stored in the cloud.

Step 4: Move files to the synced folders to free up space on your Mac.

While cloud storage requires a subscription fee, it offers unmatched convenience and built-in backup. iCloud integrates seamlessly with macOS, but other services may offer more storage for your money.


USB Flash Drives: Pocket-Sized Storage

For quick file transfers or portable storage, USB flash drives remain a convenient and affordable option.

Key benefits:

  • Extremely portable
  • Inexpensive for smaller capacities
  • No power source required

Step 1: Select a USB flash drive with USB-C connectivity for modern Macs.

Step 2: Plug the drive into an available USB-C port on your Mac.

Step 3: Format the drive using Disk Utility if needed.

Step 4: Use the drive for file storage or transfer.

While not suitable for constant read/write operations, flash drives are perfect for occasional backups or transporting files between computers.


SD Cards: Expand MacBook Pro and Mac Studio Storage

Some Mac models, like the MacBook Pro and Mac Studio, include an SD card slot that can be used for semi-permanent storage expansion.

Key benefits:

  • No external devices to carry
  • Relatively inexpensive
  • Fits flush with the Mac’s body

Step 1: Purchase a high-capacity, high-speed SD card (look for UHS-II or UHS-III ratings for best performance).

Step 2: Insert the SD card into your Mac’s SD card slot.

Step 3: Format the card using Disk Utility if needed.

Step 4: Use the SD card as additional storage space.

While not as fast as internal SSDs, high-quality SD cards can provide a significant boost in available storage without any external bulk.


DIY Internal Upgrades: For the Tech-Savvy

Some Mac models, particularly the Mac mini and Mac Studio, have upgradeable internal storage – though Apple doesn’t officially support user upgrades.

Key benefits:

  • Maintains the Mac’s original form factor
  • Potentially significant cost savings over Apple’s upgrade pricing

Caution: This method is for advanced users only. It may void your warranty and carries a risk of damaging your Mac if not done correctly.

Step 1: Research your specific Mac model to confirm upgradability and compatible parts.

Step 2: Purchase a compatible SSD upgrade kit from a reputable third-party vendor.

Step 3: Follow the vendor’s detailed instructions for disassembly and installation.

Step 4: Use Apple Configurator to initialize the new SSD with your Mac.

While this option offers the most integrated solution, it’s also the most complex and risky. Only attempt if you’re comfortable with computer hardware and understand the potential consequences.


Expanding your Mac’s storage doesn’t have to cost a fortune. By choosing the right solution for your needs – whether it’s a speedy external SSD, a versatile NAS, or cloud storage – you can significantly increase your available space without breaking the bank. Consider your usage patterns, budget, and technical comfort level when deciding which option is best for you.