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The compatible external drive depends on your exact Panasonic recorder model and the country or region where it was sold. Check the recorder’s full DMR model number against Panasonic’s local USB-HDD compatibility list before buying; brand, capacity, and a USB 3.0 label alone do not establish compatibility.

Start with the full recorder model number

Find the complete DMR model code on the recorder’s label or in its settings/about screen. Then open Panasonic’s support page for that precise model and regional market. Panasonic publishes model-specific lists, and listed capacities and recording features can differ between recorder families.

For example, Panasonic Japan’s list updated February 13, 2025, names the Buffalo HDV-SAM4.0U3-BKA, a 4TB USB 3.0 drive, for the recorder family covered by that page. The same support material lists selected Buffalo 3TB and 4TB models and Panasonic DY-HD2000 at 2TB. These are examples for the models named on the applicable lists, not universal recommendations for every 4K DIGA. See Panasonic’s 4K broadcast recording USB-HDD list and the confirmed list for DMR-2X301 and DMR-2W201/2W101/2W51.

Check the drive against what you plan to record

A drive appearing on a compatibility list does not necessarily mean every recording mode works the same way. Before choosing, check the list and model documentation for your intended use: ordinary recording, simultaneous recording, channel recording, or 4K broadcast recording. Panasonic documents simultaneous-recording combinations separately for 4K DIGA models in its simultaneous recording guidance.

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#1 Best Overall
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Seagate 2TB Portable Hard Drive | USB 3.0 (STGX2000400)
  • Easily store and access 2TB to content on the go with the Seagate Portable Drive, a USB external hard drive
  • Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
  • To get set up, connect the portable hard drive to a computer for automatic recognition no software required
  • This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
  • The available storage capacity may vary.

For the listed 4K DIGA families, 4K broadcasts cannot be recorded or dubbed to a SeeQVault-formatted USB HDD. If 4K broadcast recording is important, use the format and drive type Panasonic specifies for the exact recorder rather than assuming a SeeQVault drive is suitable. Panasonic’s 4K recording compatibility guidance identifies the models and supported drives it covers.

Match the USB connection to the recorder

Where Panasonic specifies USB 3.0, connect the drive to the recorder’s USB 3.0 port with a USB 3.0-compatible cable. Panasonic’s guidance for covered models says that using a front USB 2.0 port or a cable that is not USB 3.0-compatible can result in USB 2.0 operation. The port and cable therefore matter even when the drive itself supports USB 3.0.

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Seagate Portable 5TB External Hard Drive HDD – USB 3.0 for PC, Mac, PS4, & Xbox - 1-Year Rescue Service (STGX5000400), Black
  • Easily store and access 5TB of content on the go with the Seagate portable drive, a USB external hard Drive
  • Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
  • To get set up, connect the portable hard drive to a computer for automatic recognition software required
  • This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
  • The available storage capacity may vary.

Plan for registration and formatting

Panasonic says a USB-HDD must be registered with the DIGA before use. Its FAQ says the recorder can register eight drives, or seven on some models, but only one USB-HDD can be connected for use at a time. Check the rule for your model in Panasonic’s USB-HDD recording and supported-drive FAQ.

Do not treat the external drive as a portable library of ordinary video files. Recordings may be tied to the recorder and its registration; verify the model’s rules before buying if you need to move recordings between recorders or access them on a computer.

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Rank #3
Seagate Portable 1TB External Hard Drive HDD – USB 3.0 for PC, Mac, PlayStation, & Xbox, 1-Year Rescue Service (STGX1000400) , Black
  • Easily store and access 1TB to content on the go with the Seagate Portable Drive, a USB external hard drive.Specific uses: Personal
  • Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop. Reformatting may be required for Mac
  • To get set up, connect the portable hard drive to a computer for automatic recognition no software required
  • This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
  • The available storage capacity may vary.
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Use the local list, not generic drive specifications

A PC-compatible external drive, a higher-capacity drive, or a drive advertised as USB 3.0 is not automatically supported for recording. Confirm the exact product code on Panasonic’s list for your DMR model and region, then check capacity, recording-mode support, and the required port and cable. Panasonic’s Australian support page illustrates why region matters: its connectable USB-HDD guidance for DIGA has different constraints from Panasonic Japan’s lists.

Quick Recap

SaleBestseller No. 1
Seagate 2TB Portable Hard Drive | USB 3.0 (STGX2000400)
Seagate 2TB Portable Hard Drive | USB 3.0 (STGX2000400)
This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable; The available storage capacity may vary.
$119.99
Bestseller No. 2
Seagate Portable 5TB External Hard Drive HDD – USB 3.0 for PC, Mac, PS4, & Xbox - 1-Year Rescue Service (STGX5000400), Black
Seagate Portable 5TB External Hard Drive HDD – USB 3.0 for PC, Mac, PS4, & Xbox - 1-Year Rescue Service (STGX5000400), Black
This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable; The available storage capacity may vary.
$229.99
Bestseller No. 3
Seagate Portable 1TB External Hard Drive HDD – USB 3.0 for PC, Mac, PlayStation, & Xbox, 1-Year Rescue Service (STGX1000400) , Black
Seagate Portable 1TB External Hard Drive HDD – USB 3.0 for PC, Mac, PlayStation, & Xbox, 1-Year Rescue Service (STGX1000400) , Black
This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable; The available storage capacity may vary.
$119.80
Bestseller No. 4
Seagate Portable 4TB External Hard Drive HDD – USB 3.0, 1-Year Rescue
Seagate Portable 4TB External Hard Drive HDD – USB 3.0, 1-Year Rescue
This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable; The available storage capacity may vary.
$149.84
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UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0
  • [Upgraded Version] - This external hard drive features a mirrored logo stripe combined with a striped anti-slip design, and the rounded corners of the casing make it easier to grip. The stripes also have a heat dissipation function, ensuring stable and fast data transfer.
  • 【Ultra-thin and quiet】 - The motherboard adopts JMicron 578 noise-free solution, giving you a quiet working environment. Lightweight and portable size designed to fit in your pocket for easy portability.
  • 【Ultra-Fast Data Transfers】 - Pairing this external hard drive with JMicron 578 solution USB 3.0 and USB 2.0 interfaces enables blazing-fast data transfer. It boasts theoretical read speeds of up to 125MB/s and write speeds of up to 103MB/s.
  • 【Plug and Play】 - With no software to install, just plug it in and the drive is ready to use.The hard disk chip is wrapped with an aluminum anti-interference layer to increase heat dissipation and protect data.
  • 【What You Get】 - 1 x Portable Hard Drive, 1 x USB 3.0 Cable, 1 x User Manual, Gift-type shell packaging ,Three-year manufacturer's warranty and free technical support services.
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Seagate Portable 4TB External Hard Drive HDD – USB 3.0, 1-Year Rescue
  • Easily store and access 4TB of content on the go with the Seagate Portable Drive, a USB external hard drive.Specific uses: Personal
  • Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
  • To get set up, connect the portable hard drive to a computer for automatic recognition no software required
  • This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
  • The available storage capacity may vary.

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