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Small green circuit board with microSD male plug on one end and full-size SD female slot on the other

LORDWORLD

LORDWORLD Micro SD Male to SD Female Extender UHS-III 321MB/s

SKU CH-2C6W-XY87N

A microSD-to-SD extender supporting UHS-I speeds up to 104 MB/s and UHS-II/III up to 321 MB/s, tested at 250 MB/s with a UHS-II card

  • UHS-III support enables full-speed transfers up to 321 MB/s
  • UHS-II card tested at 270 MB/s delivers 250 MB/s through the adapter
  • UHS-I compatibility covers both 104 MB/s and 52 MB/s speed grades
  • Extends microSD cards for GPS, ROCK Pi 4 and Raspberry Pi development boards
  • Male microSD to female SD extension fits machine equipment needing remote card access

Micro SD Extender for UHS-III Cards

This LORDWORLD adapter converts a micro SD male connector to a full-size SD female socket. It supports UHS-I at up to 104MB/s and UHS-II or UHS-III at up to 321MB/s. The board is aimed at developers using platforms such as ROCK Pi 4 or Raspberry Pi SCM boards. It also fits GPS units and industrial equipment that need the card positioned away from the host slot.

Replaces Direct Board-Mounted Slots

Use this extender when the host device has a micro SD slot but the application requires a standard SD card form factor. The jump is worth it if you need UHS-II or UHS-III throughput; tests with a 270MB/s card delivered 250MB/s through the adapter. UHS-I devices are limited to 104MB/s full speed or 52MB/s high speed, so gains are modest there.

Check Pinout and Mechanical Clearance

Verify that the target device routes all UHS-II or UHS-III differential pairs to the micro SD connector; some older boards only wire the UHS-I pins. Ensure the PCB length and connector height fit inside the enclosure without stressing the host socket. The adapter carries no active components, so signal integrity depends entirely on the host layout and cable routing.

Highlights

  • UHS-III support enables full-speed transfers up to 321 MB/s
  • UHS-II card tested at 270 MB/s delivers 250 MB/s through the adapter
  • UHS-I compatibility covers both 104 MB/s and 52 MB/s speed grades
  • Extends microSD cards for GPS, ROCK Pi 4 and Raspberry Pi development boards
  • Male microSD to female SD extension fits machine equipment needing remote card access

Specifications

BrandLORDWORLD

Questions about this item

What clearance does the LORDWORLD Micro SD male-to-SD female extender need to fit beside a Raspberry Pi board?

The adapter uses a flexible PCB ribbon so it can route around tight GPIO headers and enclosure walls without a fixed height requirement.

How do I install the extender without degrading the 250 MB/s tested throughput?

Insert the Micro SD card fully into the female socket first, then plug the male end into the host slot; reversing the order can leave a gap that cuts speed to UHS-I levels.

When should I replace the ribbon cable if I move the card between a ROCK Pi 4 and GPS unit daily?

Replace it once the gold fingers show visible wear or the socket feels loose, typically after several hundred insertion cycles.

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