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Two small circuit-board adapters, one microSD-to-microSD and one microSD-to-full-size SD

LORDWORLD

LORDWORLD 2pcs TF Micro SD Extender Kit UHS-III 321MB/s

SKU CH-F5EG-NN7T3

A two-piece kit with a microSD-to-microSD and microSD-to-SD extender supporting UHS-III speeds up to 321 MB/s for development boards and embedded equipment

  • Two extenders included — one TF-to-TF and one TF-to-SD
  • UHS-I full-speed support up to 104 MB/s
  • UHS-I high-speed mode up to 52 MB/s
  • UHS-II and UHS-III full-speed support up to 321 MB/s
  • Designed for GPS, ROCK Pi 4, Raspberry Pi and SCM development boards

Dual Extender Kit for MicroSD Cards

This kit provides two adapters that move a MicroSD card outside its native slot. One adapter connects MicroSD to MicroSD and the other converts MicroSD to full-size SD. Both are built on compact PCBA boards and are intended for development boards such as the ROCK Pi 4 and Raspberry Pi, GPS units, and industrial equipment where the card slot is inaccessible.

UHS-I II III Speed Support Across Both Adapters

The MicroSD-to-MicroSD extender and the MicroSD-to-SD adapter each carry the full UHS signal path. They operate at UHS-I high-speed mode up to 52 MB/s and full-speed mode up to 104 MB/s. Both also support UHS-II and UHS-III signalling, allowing sustained transfers up to 321 MB/s when the host and card implement those standards.

Headroom for High-Throughput Capture and Compute

With UHS-III signalling the pair can feed 4K video recording, rapid burst photography, and data-logging workloads that demand the full 321 MB/s ceiling. At UHS-I full speed the 104 MB/s ceiling still serves most single-board-computer boot and storage tasks. The kit does not add storage capacity; it only extends the existing card, so total space remains limited to the inserted MicroSD card.

How it compares

Measured against everything we stock in USB & Internal Card Readers, at today’s prices. Recalculated every night.

Price $26.99
Pricier than about 68% of the 511 comparable items (median $18.99).

Specifications

Product
Brand nameLORDWORLD

Questions about this item

Will the UHS-III contacts on the TF-SD extender wear out with repeated card swaps?

The gold-plated pads are rated for thousands of insertions; normal development-board use will not wear them out.

What speed ceiling appears first when the adapter runs flat-out on a UHS-III card?

The PCB traces and contact layout limit sustained throughput to the quoted 321 MB/s maximum.

Does the TF-TF extender add measurable heat or power draw during all-day recording?

No active components are present, so the adapter adds negligible heat and no extra power draw beyond the card itself.

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