UGREEN USB-A 3.0 to USB-C Adapter — Grey (Model 50533 / US276)
The UGREEN 50533 is a compact USB-A to USB-C adapter that adds a USB-C female port to any standard USB-A 3.0 socket, instantly extending compatibility to USB-C cables and devices. It suits users with older desktops, laptops, USB-A hubs, or wall chargers who want to connect modern USB-C smartphones, tablets, hard drives, or headphones without replacing their existing cables. The adapter also supports Quick Charge, making it a practical charging accessory as well as a data transfer tool.
Technical Specifications
Connectivity
| Specification | Detail |
|---|---|
| Host Connector | USB-A 3.0 (male) |
| Device Connector | USB-C 3.1 Gen 1 (female) |
| USB Standard | USB 3.0 (Gen 1) |
| Backward Compatibility | USB 2.0, USB 1.1 |
Performance
| Specification | Detail |
|---|---|
| Maximum Data Transfer Speed | 5Gbps (USB 3.0 host port required) |
| Data Speed vs USB 2.0 | 10× faster |
| Chipset | VL160 |
| Note | 5Gbps available only when connected to a USB 3.0 port; USB 2.0 host ports cap at 480Mbps |
Charging
| Specification | Detail |
|---|---|
| Maximum Charging Output | 18W (9V/2A) |
| Also Supports | 5V/3A, 12V/1.5A |
| Fast Charge Protocols | QC 3.0, QC 2.0 |
| Circuit Protection | 56KΩ pull-up resistor — over-current protection |
| Note | Charging requires a compatible QC charger connected to the USB-A host port |
Build and Physical
| Specification | Detail |
|---|---|
| Model Number | 50533 / US276 |
| Colour | Grey |
| Housing Material | Aluminium alloy |
| Dimensions | 35mm × 12mm |
| Lanyard Loop | Yes — anti-loss keychain strap included |
| Driver Required | No — plug and play |
Compatibility
| Specification | Detail |
|---|---|
| Host Devices | Laptops, desktops, USB-A hubs, USB-A wall chargers, USB car chargers with USB-A port |
| USB-C Devices | Smartphones, tablets, USB-C hard drives, flash drives, USB-C headphones |
| Operating Systems | Windows 11/10/8.1/8/7, macOS, Linux, Chrome OS |
| Audio Support | USB-C noise-cancellation earphones (Xiaomi, Huawei compatible models) on Windows and macOS |
| Not Supported | USB-C to HDMI adapters via this adapter; video output not supported |
Use Cases and Applications
Extending USB-A chargers and hubs to USB-C devices
Many households and offices still have USB-A wall chargers, car chargers, and powered USB hubs. The UGREEN 50533 converts any USB-A 3.0 port into a USB-C female socket, allowing users to plug in a USB-C cable directly without replacing existing chargers or hubs. When connected to a QC 3.0–compatible charger, the adapter delivers up to 18W — sufficient for fast-charging most Android smartphones.
Connecting USB-C peripherals to older laptops
Ultrabooks and business laptops released before 2018 frequently include only USB-A ports. However, modern accessories — including external SSDs, portable hard drives, and USB-C flash drives — ship with USB-C connectors. The 50533 bridges this gap, allowing users to connect USB-C storage devices to a USB-A 3.0 laptop port at full 5Gbps speeds without buying a new hub or docking station.
Using USB-C headphones with USB-A audio ports
USB-C noise-cancelling earphones from manufacturers such as Xiaomi and Huawei rely on digital audio output rather than a 3.5mm jack. The 50533 supports audio output through its USB-C port on compatible Windows and macOS systems, making it a compact solution for users who own USB-C earphones but work at desktops without native USB-C ports.
Travel and everyday carry
At 35mm × 12mm, the adapter occupies minimal space in a laptop bag or travel kit. The lanyard loop secures it to a keyring or bag zip, reducing the chance of misplacement during travel. Users who regularly move between USB-A hotel room chargers or airport lounge sockets and their USB-C devices benefit from carrying the 50533 alongside a USB-C cable.
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