AliexpressThe UGREEN CM401 SD4.0 Card Reader is the USB-C Metal SD4.0 variant, model CM401/15251. It combines a cabled aluminum-body reader with one USB-C host plug, one SD slot, and one microSD/TF slot. Use it to import camera files, move microSD media to a laptop, or prepare cards for compatible handheld devices. This is the cabled USB-C model, not the different black dual-ended USB-A/USB-C 65024/CM803 version.
What it supports
The reader supports SD4.0 and TF4.0, with backward support for SD3.0 and TF3.0 card families. Supported families include SD, SDHC, and SDXC, together with their microSD equivalents. SD4.0 is a UHS-II standard; a UHS-I card remains UHS-I and does not become UHS-II when used with this reader.
- One full-size SD slot and one microSD/TF slot
- USB-C host connection through the attached lead
- Reading two cards is described by the manufacturer
- Manufacturer-listed operating systems include Android, iOS, Windows, macOS, and Linux
Everyday use
Two slots can reduce repeated adapter changes when working with different media. However, simultaneous cards share the host connection. Actual transfer performance depends on the card standard and controller, host, cable, filesystem, file sizes, and whether both slots are active. The manufacturer’s performance figures are estimates, not independent measurements, so they should not be treated as guaranteed real-world speed.
Specifications and package
| Model | CM401/15251 |
|---|---|
| Variant | USB-C Metal SD4.0 |
| Slots | SD and microSD/TF |
| Body and connection | Aluminum body with attached USB-C lead |
| Included | Reader and user manual |
Memory cards, computers, extra cables, power supplies, and software licenses are not included. The reader provides card data access only: it does not provide charging passthrough or display output.
Practical limitations and buying checks
The connected phone or tablet must support USB host or OTG storage and a compatible filesystem; a file-management app and suitable port capability may also be required. Do not assume support for every USB-C phone, Lightning iPhone, or Thunderbolt-level performance. Before buying, check that your host has USB-C, confirm the card format and filesystem are supported, and choose the CM401/15251 USB-C variant rather than the separate USB-A/USB-C model.
Insert each card in the matching orientation without force. Stop writes and safely eject before removal, and back up important files before formatting because formatting can erase data. This reader is not a memory-recovery tool, waterproof device, or counterfeit-card validator.
US listing and buying checks
Price checked: November 5, 2026. The selected USB-C Metal SD4.0; CM401/15251 cabled reader, no memory cards from Ugreen Official Store showed free US shipping. Estimated delivery was November 12–17, 2026. The checked signed-in account allowed up to one item at the displayed price. This was a product-page observation, not a completed checkout or a delivery guarantee. Reselect the exact option, confirm shipping to your address, and review taxes and final charges. AliExpress prices vary by variant, seller, account, destination, promotion and time.
For context, see our creator desk setup guide. For sale timing, use the November sale calendar; check the US promo-code catalog separately. No coupon has been checkout-verified for this selected item.
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