USB C to USB: Adapters, Compatibility, and Charging Guide

If you’ve ever fumbled with a USB-C laptop and tried to plug in an older flash drive or keyboard, you already know the frustration. ASUS VivoBook machines are increasingly shipping with USB-C ports only, which means those trusty USB-A accessories suddenly need a workaround. The right adapter bridges that gap without drama, as long as you know what to look for.

Apple Adapter Price: €25.00 ·
Compatible USB Versions: USB 3.0, USB 2.0, USB Type-C ·
ASUS VivoBook Charger: 65W AC Power Adapter ·
Manhattan Adapter Set: 2 adapters (C to A and A to C) ·
Connection Types Supported: Mice, keyboards, thumb drives, printers

Can you go from USB-C to USB?

Absolutely — and it’s one of the most practical adapter categories for anyone with a newer laptop holding only USB-C ports. The reversible oval connector accepts standard USB-A plugs through a small adapter that wires the data pins directly across.

“USB Type-C®(USB-C) has multiple functions. We can confirm the function that USB Type-C® can undertake through the mark next to the USB Type-C® interface.”

— ASUS Support technical documentation

Backward compatibility explained

USB-C was designed with backward compatibility in mind, which means an adapter can translate between the two connector shapes without any special electronics. According to ASUS Support, USB-C ports on ASUS laptops can handle data only, charging, display signals, or all of these — the function depends on what the specific port supports. A USB-C to USB-A adapter lets you connect legacy mice, keyboards, printers, and thumb drives to that USB-C port.

• USB 3.0 adapters work with USB 2.0 devices at reduced speed
• Charging via adapter supports up to 3A on most passive adapters
• Data transfer rates depend on the slower device or port in the chain

Adapter types required

Two main adapter types handle this translation. A USB-C to USB-A adapter has a female USB-A port on one side and a male USB-C plug on the other — ideal for plugging USB-A accessories into USB-C laptops. The reverse, a USB-A to USB-C adapter, lets you charge USB-C devices from a standard USB-A wall charger. Manhattan sells both directions in a two-adapter set priced at €10.00.

How to connect a USB-C to a USB?

The connection process is straightforward once you have the right adapter. Most USB-C to USB-A adapters work instantly with no driver installation required.

Step-by-step connection guide

1. Identify your USB-C port — it’s the small oval connector on your VivoBook
2. Insert the USB-C end of your adapter into the laptop port
3. Plug your USB-A device (mouse, keyboard, or drive) into the adapter’s USB-A port
4. Wait a moment for Windows to recognize the device, then use normally

Required cables and adapters

For data transfer and basic charging, a passive USB-C to USB-A adapter is sufficient. These adapters simply bridge the connector shapes without any active electronics. According to Harvey Norman Ireland, Manhattan adapters require no drivers and work across a wide range of computers including ASUS VivoBook models.

Will A USB to USB-C adapter work?

Most of the time, yes — but the answer depends on what you’re trying to do. The distinction between passive and active adapters matters significantly for different use cases.

“Third-party USB-C to USB-A adapters support sync and charge up to 5 Gbps and 3A.”

— Powerbanks.ie adapter specifications

What works and what breaks

Cheap passive adapters wire the USB-A data pins directly to the corresponding USB-C pins, which means they work reliably for data transfer and charging up to the adapter’s rated current. According to Powerbanks.ie, third-party USB-C to USB-A adapters support sync and charge up to 5 Gbps and 3A. What breaks: trying to use a USB-A power brick to deliver USB Power Delivery — those protocols require USB-C to USB-C connections.

• Works: connecting USB-A flash drives, mice, keyboards, printers
• Works: charging devices that accept standard USB-A charging profiles
• Breaks: USB Power Delivery from a USB-A source through an adapter
• Breaks: high-power charging beyond 3A without PD support

Passive vs active adapters

Passive adapters are simple and inexpensive but have limitations. Active adapters contain chips that can translate protocols, making them necessary for USB-C charging from non-USB-C sources, display output through USB-C adapters, or connecting to networks via USB-C ethernet adapters. For most VivoBook owners connecting peripherals, a passive adapter handles the job perfectly.

Can ASUS VivoBook use a Type-C charger?

Many VivoBook models support USB-C charging, but not all USB-C ports on VivoBook laptops are designed for power delivery. Checking your specific model matters before investing in a USB-C charger.

VivoBook 15 charging compatibility

ASUS officially supports USB-C charging on select VivoBook models. Newegg confirms models like the C425TA are compatible with the 65W USB-C adapter. According to ASUS USA, the 65W USB-C Adapter is designed for ASUS laptops that support charging via USB-C, including the VivoBook series. The adapter delivers USB PD 3.0 with outputs at 5V/3A, 9V/3A, 15V/3A, and 20V/3.25A.

Recommended chargers

For VivoBook laptops that support USB-C charging, ASUS offers two official options. The ASUS 65W USB-C Adapter handles full-power charging with PD 3.0 support, while the ASUS 45W USB-C Adapter offers a compact alternative for lighter use. Both adapters accept the international voltage range of 100-240V, making them suitable for Ireland’s 230V standard.

The pattern: VivoBook models vary in USB-C charging capability, so the €79 Newegg price for a 65W official adapter makes sense only after confirming your specific model’s port specs on the ASUS Ireland product page or e-manual.

The implication: the Manhattan €10 set handles peripheral connections while the €79+ ASUS adapters power your VivoBook — these serve distinct purposes despite both using USB-C connectors.

Is USB being phased out for USB-C?

The transition from USB-A to USB-C is well underway, driven by the versatile design of USB-C ports that handle charging, data, and display output from a single connector.

USB A vs USB C differences

The physical difference is obvious: USB-A is the large rectangular connector that has been standard for decades, while USB-C is the small reversible oval that fits either orientation. Beyond appearance, USB-C supports higher data transfer speeds, faster charging through USB Power Delivery, and alternate modes for video and audio. USB-A cannot deliver these capabilities regardless of the adapter used.

What this means: ASUS VivoBook’s shift to USB-C-only designs reflects an industry-wide movement toward a single, versatile connector that replaces USB-A, HDMI, and even proprietary charging ports.

Why USB-C is replacing legacy ports

The USB-C connector consolidates multiple functions into one port: charging, data transfer, and video output. According to ASUS Ireland official specifications, the 65W USB-C Adapter includes multiple protections (OVP, OCP, OTP, SCP) that ensure safe operation across worldwide voltages. This safety baseline makes USB-C viable for replacing dedicated charging ports.

The implication: VivoBook users in Ireland face a transitional period where USB-A accessories remain useful for years, but every new peripheral purchase should assume USB-C as the default interface going forward.

For VivoBook owners in Ireland navigating this transition, the €10 Manhattan adapter set covers peripheral connectivity while the 65W ASUS adapter handles power delivery — two purchases that eliminate the frustration of USB-C-only laptop ownership.