UGREEN 80887 USB-A 3.0 SD & microSD Card Reader, UHS-I
Overview
UGREEN 80887 is a two-slot USB-A 3.0 reader for full-size SD and microSD/TF media. This model guide separates connector bandwidth from real card performance and explains every important compatibility boundary before you move valuable files.
- USB-A • SD + MICROSD • UHS-I 104MB/S
- SKU 80887
- 1 × full-size SD; 1 × microSD/TF
What it does well.
Key features
Reader role. a two-slot USB-A 3.0 reader for full-size SD and microSD/TF media.
Host connection. USB-A 3.0 male on an approximately 5.9-inch braided cable.
Card layout. 1 × full-size SD; 1 × microSD/TF.
Practical speed. Up to 104MB/s on the UHS-I path with a suitable card and host.
Model check: Similar-looking UGREEN readers can differ in host plug, card protocol, simultaneous access, extra USB ports and charging. Match SKU 80887 rather than buying by appearance alone.
Ports, slots and connection map
Host side: USB-A 3.0 male on an approximately 5.9-inch braided cable.
Reader and accessory side: 1 × full-size SD; 1 × microSD/TF.
Extra function: Aluminium shell and flexible short cable help with heat and port spacing. The GL3224L controller is shown in media.
Direction rule: A card reader is a host accessory. It must connect to a device that can act as a USB host; connecting two accessories together does not create a host.
Speed explained without the marketing blur
USB/interface ceiling. Up to 5Gbps USB 3.0 signalling, backward compatible with slower USB hosts.
Memory-card ceiling. Up to 104MB/s on the UHS-I path with a suitable card and host.
UHS generation. UHS-I. UHS-II cards can be accepted only at UHS-I speed according to UGREEN official product guidance.
Real-world result. The slowest link wins: card, slot mode, reader controller, host port, file system, thermal state, file sizes and simultaneous activity all matter.
Never equate 5Gbps or 10Gbps with card speed. USB values describe theoretical link signalling. SD and microSD media usually operate at much lower sustained rates, and many small files transfer more slowly than one large sequential file.
Card formats, capacity and file systems
Supported card families. SD, SDHC, SDXC, MMC/RS-MMC; microSD/TF, microSDHC and microSDXC.
Capacity boundary. UGREEN specifies cards up to 2TB; host and file-system support still apply.
File-system caveat. The card must use a format the host understands. exFAT is common for large removable media; FAT32 has file-size limits; NTFS and vendor-specific formats may not mount on phones/tablets.
Write-protect reminder. A full-size SD card with its lock tab engaged may be readable but not writable. The reader cannot override the card's mechanical write-protect state.
Simultaneous access and shared-resource behaviour
Both slots can be read from or written to together. Simultaneous activity can reduce the rate available to each card.
Shared bandwidth. Two cards or attached peripherals divide the bandwidth available through the single host connection.
Shared power. Bus-powered readers and USB peripherals depend on host power. High-draw drives may disconnect or fail to mount without an appropriate powered path.
Copying card-to-card. The computer or mobile host mediates the copy. The reader is not an autonomous duplicator and does not copy files when disconnected from a host.
Safest workflow. For irreplaceable media, copy one card, verify the files, create a second backup and only then erase or reformat the original.
Compatible devices and systems
Compatible device class: desktop and laptop computers with a USB-A host port.
Operating systems: Windows, macOS, Linux and ChromeOS with USB mass-storage support..
Mobile rule: Phones/tablets need a separate compatible USB-A OTG adapter and sufficient host support; no adapter is included.
USB-C is only a shape. A USB-C port can be charging-only, data-capable, OTG-capable or video-capable. Confirm the host function.
Apps and permissions. On phones/tablets, use Files, Photos or the manufacturer's supported file manager and allow removable-storage access when prompted.
Cases and clearance. A thick case can prevent full plug insertion. Remove it temporarily rather than forcing the connector.
Managed devices. Corporate policy, encrypted cards or restricted mobile profiles can block removable media even when hardware is compatible.
Use scenarios
Scenario 1. Import photos from SD to a USB-A laptop.
Scenario 2. Read drone microSD media at a desktop.
Scenario 3. Copy between SD and microSD through a computer.
Scenario 4. Keep a short-cable reader in a camera bag.
Setup and usability guidance
- Confirm SKU 80887, the required host connector and the card format before insertion.
- If using a phone or tablet, enable or confirm OTG/USB-host storage and make sure the battery has enough charge.
- Insert the memory card straight into its matching slot in the orientation shown by the slot label. Never force it.
- Connect the reader to the host. Wait for the removable volume to appear in Files, Finder, File Explorer or the supported mobile app.
- Copy a small test file first. Then start the main transfer and keep the device, cable and cards still.
- Verify copied folders, file counts and several representative files before treating the transfer as a backup.
- Use Eject or Unmount, wait for activity to finish, then disconnect by the connector housing rather than the cable.
What this product does
- a two-slot USB-A 3.0 reader for full-size SD and microSD/TF media.
- Provides 1 × full-size SD; 1 × microSD/TF.
- Works within the documented speed and compatibility limits.
- Supports the stated host and card families when the operating system can mount them.
- not direct USB-C, not UHS-II speed, not a charger, not an independent card copier and not guaranteed to sustain 104MB/s during two-card use.
- It does not repair corrupted media, recover deleted files or guarantee that damaged cards will mount.
- It does not make one copy into a backup; keep another copy on separate storage.
- It does not guarantee every illustrated device, card capacity or speed without the required host capability.
What to do
Do: label cards. Separate blank, active and backed-up cards. Locking or labelling completed media prevents accidental erasure.
Do: verify before erasing. Open several copied files and compare counts or checksums for critical work.
Do: keep connectors clean. Use a dry, dust-free environment and store the reader where slot contacts are protected.
Do: eject safely. Unmount every active volume and wait for activity to stop before removal.
Do not: remove during writing. Disconnecting during import, deletion, formatting or metadata updates can corrupt the file system.
Do not: force media. Wrong orientation or the wrong card family can bend contacts or crack the card.
Do not: format the wrong disk. Confirm the volume name, capacity and path before erase or format operations.
Do not: trust one copy. Portable cards fail, get lost and can be overwritten. Maintain a separate backup.
Warnings and limitations
Heat and moisture: keep the reader dry and ventilated. Mild warmth during sustained transfer can be normal; disconnect if there is unusual heat, smell, deformation or repeated resets.
Power: Aluminium shell and flexible short cable help with heat and port spacing. The GL3224L controller is shown in media.
Card handling: do not touch contacts, bend cards, use cracked adapters or insert nested adapters that do not fit cleanly.
Formatting: formatting deletes the file-system index and can make recovery difficult. Back up first and confirm the target device's preferred format.
Critical data: no reader can guarantee recovery from failing media. Stop repeated write attempts on a card showing errors and seek professional recovery help if the files are irreplaceable.
Troubleshooting
Card does not appear. Reseat the card and reader, confirm slot orientation, test one card at a time, remove an obstructing case and check OTG/file-system support.
Card is read-only. Check the SD lock tab, operating-system permissions, card health and whether the file system was mounted read-only after errors.
Transfer is slower than expected. Use one card, a direct high-speed host port and large sequential files; confirm the card's own sustained rating and negotiated UHS mode.
Reader disconnects. Remove high-power USB peripherals, connect a suitable PD/powered path where this model supports it, and avoid loose extensions.
Phone cannot see files. Use the Files/Photos app, enable OTG, grant storage permission and verify the card uses a phone-supported format such as exFAT/FAT32.
Copied file will not open. Compare the original, copy again to a different destination and stop using a card that reports I/O, CRC or corruption errors.
Final model check
Confirm SKU 80887, USB-A 3.0 male on an approximately 5.9-inch braided cable, and 1 × full-size SD; 1 × microSD/TF. Then match the UHS mode, capacity, simultaneous-access rule and mobile/charging requirements before ordering.
At a glance.
- Brand / SKU
- UGREEN 80887
- Product role
- a two-slot USB-A 3.0 reader for full-size SD and microSD/TF media
- Host connection
- USB-A 3.0 male on an approximately 5.9-inch braided cable
- Slots / ports
- 1 × full-size SD; 1 × microSD/TF
- Simultaneous behaviour
- Both slots can be read from or written to together. Simultaneous activity can reduce the rate available to each card.
- Interface ceiling
- Up to 5Gbps USB 3.0 signalling, backward compatible with slower USB hosts.
- Card performance
- Up to 104MB/s on the UHS-I path with a suitable card and host.
- UHS/card mode
- UHS-I. UHS-II cards can be accepted only at UHS-I speed according to UGREEN official product guidance.
- Card formats
- SD, SDHC, SDXC, MMC/RS-MMC; microSD/TF, microSDHC and microSDXC.
- Capacity/file-system note
- UGREEN specifies cards up to 2TB; host and file-system support still apply.
- Operating systems
- Windows, macOS, Linux and ChromeOS with USB mass-storage support.
- Build
- grey aluminium reader body with braided USB-A cable and two front card slots
- Approx. dimensions
- Approx. 45 × 34 × 11mm body; cable about 5.9 inches
- SKU
- 80887
- Host connector
- USB-A 3.0
- Slots
- 1 × SD; 1 × microSD/TF
- USB ceiling
- Up to 5Gbps
- Card path
- UHS-I, up to 104MB/s
- UHS-II cards
- Accepted only at UHS-I speed
- Simultaneous access
- SD + microSD supported
- Advertised capacity
- Up to 2TB
1 × UGREEN 80887 USB-A SD/microSD card reader
Memory cards, phone, tablet, computer, camera, charger, external drive and other illustrated accessories are not included unless explicitly named above or in the selected offer.
Questions buyers ask.
What exactly is UGREEN 80887?
a two-slot USB-A 3.0 reader for full-size SD and microSD/TF media.
Which host connection does it need?
USB-A 3.0 male on an approximately 5.9-inch braided cable.
Which card slots or ports are provided?
1 × full-size SD; 1 × microSD/TF.
Can it access more than one card at a time?
Both slots can be read from or written to together. Simultaneous activity can reduce the rate available to each card.
Is 5Gbps the actual card speed?
No. Up to 5Gbps USB 3.0 signalling, backward compatible with slower USB hosts. Up to 104MB/s on the UHS-I path with a suitable card and host.
Does it support UHS-II speed?
UHS-I. UHS-II cards can be accepted only at UHS-I speed according to UGREEN official product guidance.
What card formats and capacities can I use?
SD, SDHC, SDXC, MMC/RS-MMC; microSD/TF, microSDHC and microSDXC. UGREEN specifies cards up to 2TB; host and file-system support still apply.
Will it work with a phone or tablet?
Phones/tablets need a separate compatible USB-A OTG adapter and sufficient host support; no adapter is included.
Which file system should I use?
Use a format supported by both the host and destination device. exFAT is common for large removable media; FAT32 has a 4GB single-file limit; NTFS often fails on phones/tablets.
How should I remove a card safely?
Finish every transfer, close apps using the volume, choose Eject or Unmount, wait for activity to stop, then remove the card and reader without pulling the cable.
What is included in the package?
1 × UGREEN 80887 USB-A SD/microSD card reader.