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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteA USB-C protection switch is a controlled power-path component that helps protect a port or system from electrical faults. For an Extended Power Range (EPR) design, choose the switch for the port’s power direction, operating voltage, current, reverse-current behavior, and fault requirements—not from a single maximum-voltage or wattage figure. AOS offers sink and source switches for different USB Type-C designs, but the capability of one switch is not the same as the maximum power allowed by USB Power Delivery.
What a USB-C protection switch does
A protection switch sits in the power path between a USB Type-C port and the system, or between the system and a port supplying power. It controls when that path conducts and may disconnect or limit it when a fault is detected. AOS lists functions across its ECPower portfolio that include overvoltage, overcurrent, overtemperature, reverse-current blocking, inrush control, and short-circuit protection. The feature set varies by part; the family name does not mean every device implements every protection.
These switches are board-level semiconductor components for circuit integration, not consumer plug-in adapters. The switch is one element in a complete design that also depends on the USB-C/PD controller, power source or load, layout, thermal path, and system-level protection strategy.
Sink and source switches handle opposite power directions
“Sink” and “source” describe the direction of power flow through the switch. In a sink path, power enters through the Type-C port and travels toward the internal system. In a source path, power travels from the system out to the Type-C port. A design that supports changing roles or multiple ports must account for its actual power-path topology rather than assume one switch type covers every direction.
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#1 Best Overall
- ✅【Widely compatibility】This usbc switch supports charging/data/audio/video transmission. Wide compatibility with most USBC devices,including USB c flash drives, microphones, usb-powered led desk lamp, USB fan, led strip lights, ios system, raspberry pi, bedside lamp, USBc keyboard, mouse webcams microphones.
- 🚀【【10Gbps High-Speed Data Transfer】This usb c switch transfers large files, syncs data, or backs up your devices at up to 10Gbps. A 10GB file completes in seconds—saving time and keeping workflow smooth. (Note: Speed varies by device port and connected cables. Use USB-C to C ports and keep total length within the recommended range for optimal performance.)
- 🚀【100W Ultra-Fast Charging】This usb-c switch supports up to 100W power delivery (backward compatible with 65W/30W PD charging), enough to power high-performance laptops (MacBook Pro 16", gaming laptops) and all USB-C phones/tablets.(Note: the charging power depends on the upper limit of your device.)
- 🚀【4K@60Hz HD Video Output】The type c switch supports up to 4K@60Hz resolution HD video output from USB C laptops to USB C display screen or monitor. Whether you are watching home movies or playing games, it could bring you a great experience!
- 💎[High quality]Oxygen-free copper core and multiple aluminum foil shields minimize interference and optimize signal clarity. Any question, do contact our customer support team, we will response within 24 hours.
AOS’s portfolio describes USB-C PD in a context reaching up to 20 V and 5 A. That is not the EPR maximum. USB-IF says USB PD Revision 3.1 extended power delivery to as much as 240 W, with fixed 28 V, 36 V, and 48 V levels associated with up to 140 W, 180 W, and 240 W, respectively. See the USB-IF USB Power Delivery overview for this standards context.
USB PD EPR power capability is not a switch rating
The 240 W figure describes the upper power capability of USB PD 3.1 under the specified system conditions; it does not mean any individual protection switch can carry 240 W. AOS announced the AOZ13937DI as a 28 V sink switch and the AOZ15333DI as a source switch for EPR designs up to 140 W. The announcement also stated that the pair withstands up to +39 V on VBUS. Those are AOS’s claims for that pair, not a statement that the USB-IF 240 W maximum applies to either switch. Consult the March 14, 2023 AOS announcement and current component documentation when evaluating them.
Rank #2
- Compatibility Warning – Cable & Setup Requirements: Use only the included USB4 20Gbps cables. Do not substitute with Thunderbolt 3/4/5 cables. Avoid USB-C docks with built-in (non-detachable) host cables. This switch works with USB4 and Thunderbolt 4 docks, but its 20Gbps bandwidth (vs. 40Gbps docks) may limit display resolution, refresh rate, or number of monitors compared to a direct connection.
- Ultra-Fast 20 Gbps USB4 /USB-C Switcher for 2 Computers: Instantly share a USB-C monitor or Thunderbolt 4 Monitor or a Thunderbolt docking station between two laptops with this versatile USB C KVM switch. Connect the pigtail cable to your monitor or docking station and the included 3.3ft USB-C/USB4 cables to two computers for seamless device sharing. Achieve lightning-fast data transfer speeds up to 20 Gbps, perfect for large file transfers, high-resolution video streaming, and demanding applications.
- 8K Video Resolution Support: Experience stunning 8K video output at 30Hz, delivering exceptional clarity and color accuracy for both professional and entertainment use. Supports up to 8K@30Hz / 4K@144Hz on Windows, and 4K@60Hz on macOS when connected to a single USB-C or Thunderbolt 4 monitor. Compatible with popular models including Dell UltraSharp U3224KB, U3425WE, U2723QE, U4025QW, U2720Q, Dell S2722QC, HP E27m G4 QHD USB-C Monitor, HP Z43 42.5-inch 4K UHD Display, HP Z32k G3 4K USB-C Monitor, Lenovo ThinkVision P27h-20, T32p-20, LG 27UN850-W, and LG 32UN880-B.
- Docking Station Conversion: Share one USB-C or Thunderbolt 4 docking station between two computers and use it like a Thunderbolt KVM switch. For dual or multi-monitor on Windows, choose a USB-C/TB4 dock with MST (macOS supports one display). Compatible with popular TB4 docks with a detachable host cable: CalDigit TS4/Element Hub, Lenovo ThinkPad Universal TB4 (40B0), Plugable TBT4-UDZ/UDX1, OWC 11-Port TB4/Thunderbolt Go, Anker 777/778, Satechi TB4 Dock, Kensington SD5780T, Cable Matters TB4 Dock 107054, TB4 Dock Pro INC006 and more.
- Convenient RF Remote Control: Functioning as a Thunderbolt 4 switch, it can seamlessly switch between two connected hosts using the included RF remote control, without the hassle of additional software or drivers. Maintain a clean and organized workspace by eliminating the need for extra cables and switches. This flexibility allows for optimal placement of the USB C switcher 2 computers, ensuring it fits perfectly within your workspace setup.
USB-IF’s document library search result listed Power Delivery Specification Revision 3.2 Version 1.2, dated September 14, 2026. The overview page is useful for orientation, but it is not a substitute for the applicable current normative specification. For a design or compliance decision, use the relevant revision-controlled specification together with the full, current datasheet for each component.
How to choose a switch for a USB-C PD design
Start from the negotiated power profiles and the circuit’s real worst-case conditions. Operating voltage, absolute maximum voltage, continuous current, peak current, and power delivered to the load are different constraints. A part’s absolute-maximum rating is not its normal operating range, and a peak-current figure is not a continuous-current rating.
Rank #3
![USB C Extension Cable with On Off Switch[1ft], 10Gbps Data/Charging/Video](https://m.media-amazon.com/images/I/31Ud6LiGwpL._SL160_.jpg)
- [Super Speed USB 3.1 10Gbps] RIITOP USB 3.1 Extension ON OFF Cable's speed can be up to 10Gbps, support Video/Data/PD Charging, Ideal for USB C flash drives, microphones, USB-Powered LED Desk Lamp, USB Fan, LED Strip Lights, IOS System, Raspberry Pi, Bedside Lamp, USB Keyboard, Mouse webcams microphones, and other computer peripheral low-power electrical USB C Accessories
- [Support Video/Data/PD Charging] It's not only a full-featured USB C Extension, support Connecting USB C Display up to 4K@60Hz, USB C External SSD up to 10Gbps, PD Fast Charing up to 20V/5A, but also with Built-in toggle switch, which can turn the connected USB device on or off
- [Application] It can turn off webcams and microphones for privacy; Shut off unused devices to save power, turn off USB-powered LED lights and fans
- [Usage] When Press the Switch to"-",the cable will connect , When Switch Press to another side without sign, the cable will be disconneted
- Please Note: 1. The max length of connected USB C Male to C Male is 1.5m/5ft, otherwise it can not work stably 2. It can not support high-power electrical devices. 3. If connected USB 3.0 or Low version USB C Cable or Device, it can still be USB 2.0 Speed. Package Including: 1x USB3.1 C Extension ON/OFF Switch Cable
- Map power direction. Identify whether the port is a sink, a source, or part of a topology that needs more than one path. Match the switch to that direction.
- Set the voltage envelope. Include the PD/EPR profiles the system must support and account for expected transients. Check the stated operating range separately from absolute maximum ratings.
- Check current and heat. Compare continuous and peak limits with the load profile, then assess on-resistance, dissipation, safe operating area, package, and PCB thermal path.
- Specify fault behavior. Confirm which protections are needed—such as OVP, UVLO, current limiting, short-circuit response, thermal shutdown, inrush control, or soft-start—and determine how the device responds, including whether it latches off or retries.
- Account for reverse current and role changes. Check whether the path needs true reverse-current blocking or an ideal-diode behavior, and whether Fast Role Swap (FRS) support is required.
- Verify implementation details. Review control pins, external components, footprint, availability and lifecycle, then validate the complete circuit against the current datasheet and applicable USB PD requirements.
In an AOS application paper, reverse-current protection is discussed as a way to protect a shared system rail from an improperly behaving adapter that applies a higher voltage. The paper also describes an FRS timing scenario for a dock and says the relevant sourcing response must occur within 150 μs, with controller response time using part of that budget. Treat those details as the paper’s explanation and confirm any compliance requirement against the current normative specification. Read AOS’s USB Type-C Power Delivery and Protection paper.
Examples from AOS’s ECPower portfolio
The following examples illustrate why parts within one protection-switch portfolio are not interchangeable. Specifications below are as stated on AOS’s product pages; check current datasheets for full conditions, limits, and status. The examples are not recommendations.
Rank #4
- Effortless 2-in-1 USB C Switch :Easily control two computers with a single monitor using the Alxum USB C Switch. Perfect for office professionals and gamers who need seamless switching without installing any software. Quickly switch between devices with a wireless remote or the button on the switch itself. Note: Ensure all three connected USB-C devices support DP ALT MODE .
- For USB C Docking Station：①Direct Connected:When the Type-C Male on the switch is directly connected to the Type-c female port of the docking station, the performance can reach the best; ②Connect with Adapter：If your docking station is with pigtail, please use the included USB-C female to female adapter, but please make sure that the length of the docking/hub body pigtail does not exceed 50CM(The specific performance may be related to the performance of your USB or TBT host)
- 20Gbps High-Speed Transmission:Enjoy ultra-fast data transfer up to 20Gbps. Stream videos, transfer files, and play games without lag. Our USB-C switch ensures professional efficiency and reliable teamwork in any work or gaming scenario.
- 8K & 4K High-Resolution Display:Supports up to 8K@30Hz or 4K@144Hz for an immersive visual experience. Compatible with USB-C/Thunderbolt 4 monitors and docks. Note: When connecting dual monitors via a Thunderbolt 4 dock, the maximum resolution is 4K@60Hz. MacOS supports the expansion of ONE 4K@60Hz monitor.
- PD 140W Charging:Provides powerful 140W pass-through charging for laptops, tablets, and phones. Keep your devices fully charged while switching between computers, ensuring safe and reliable power delivery.(Power supply is not included.)
| Part | Role and stated use | Selected published specifications |
|---|---|---|
| AOZ13937DI | Sink switch; announced for 28 V Type-C EPR designs up to 140 W as part of a pair with AOZ15333DI. | AOS’s March 14, 2023 announcement states up to +39 V VBUS withstand for the pair. See the announcement. |
| AOZ15333DI | Source switch; announced for 28 V Type-C EPR designs up to 140 W as part of a pair with AOZ13937DI. | AOS’s March 14, 2023 announcement states up to +39 V VBUS withstand for the pair. See the announcement. |
| AOZ1328DI-02 | Sink switch; AOS lists it as full production. | 3.4–22 V operating input; 28 V VIN absolute maximum; 10 A maximum load; selectable OVP; UVLO, overvoltage and overtemperature protection; internal soft-start. See the AOS product page. |
| AOZ15953DI-02 | Source protection switch described for Type-C PD EPR applications requiring reverse-current protection. | 60 V VOUT absolute maximum; 3.5 A continuous current; 35 mΩ typical on-resistance; FRS and protection features. The 60 V figure is an absolute maximum, not an operating voltage. See the AOS product page. |
| AOZ1376DI-02 | Sink OVP/TRCB switch. | 3.4–22 V operating range; 28 V absolute maximum; 5 A DC current capability; 20 mΩ typical on-resistance. See the AOS product page. |
| AOZ13987DI-02 | Sink OVP switch with ideal-diode true reverse-current blocking. | 3.4–23 V operating range; 28 V absolute maximum; up to 8 A load. AOS separately gives peak-current figures, which should not be treated as continuous-current ratings. See the AOS product page. |
| AOZ1356LI-02 | Source switch. | Programmable current limit, reverse-current blocking, FRS support, and VOUT rated to 28 V absolute maximum. Check the current datasheet for typical on-resistance and other operating limits. See the AOS product page. |
What to verify before adopting a specific part
- Confirm that the exact device’s operating limits support the intended negotiated voltage and load, rather than relying on its absolute-maximum rating or a family-level description.
- Read the current datasheet for protection thresholds, timing, response modes, pin behavior, package thermal limits, and the conditions behind typical values.
- Check whether the design needs FRS, reverse-current blocking, programmable current limit, or other features the selected part may not provide.
- Confirm current production status and availability with the manufacturer or distributor; the presence of a product page does not establish current stock.
- Validate the complete power path and compliance against the applicable current USB PD specification. The USB-IF document library provides access to specification documents.
AOS’s product pages and technical paper are manufacturer sources, and its performance descriptions should be read as vendor specifications or claims rather than independent comparative test results. No head-to-head efficiency or reliability conclusion follows from the listed figures alone. AOS’s ECPower Type C Protection Switch portfolio is a starting point for identifying parts, not a substitute for selecting and validating one against the circuit.
Quick Recap
Best Value
- 𝐖𝐚𝐫𝐦 𝐓𝐢𝐩: The usb c to usb c extension cable supports complies with the USB 2.0 data transfer standard. But Video output is not supported. The 4K or 8K function is not supported. It is not recommended to connect a USB C hub. Its switch can only disconnect the charging circuit, cannot disconnect the data transmission. Does not support large file transfers exceeding 480 Mbps.
- 𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐨𝐧 𝐂𝐨𝐫𝐝 𝐰𝐢𝐭𝐡 𝐒𝐰𝐢𝐭𝐜𝐡: This type c extension cable effectively helps you cut off the power supply, preventing your devices from remaining connected to a charger after they’re fully charged. It effectively reduces wear and tear on your devices, extending their lifespan. You can easily disconnect the power with just a light press of the switch button. Whether you’re in bed, on the couch, or at work, you can use it with ease. No matter where you are, simply plug in your charging cable to easily disconnect the power.
- 𝐌𝐚𝐱 𝟐𝟒𝟎𝐖 𝐅𝐚𝐬𝐭 𝐂𝐡𝐚𝐫𝐠𝐢𝐧𝐠 : VAFOTON usb c extension cable with switch can provide up to 240W (48V/5A) , compatible with 18W/60W/100W/240W. It provides ample power for your type c various devices. Note: The actual charging speed of the usb c extender depends on your charging cable, charger, and device. To achieve the maximum power output of 240W, your device must also be capable of 240W, and your charger and charging cable must support 240W high-power output.
- 𝟓𝟒𝟎 𝐃𝐞𝐠𝐫𝐞𝐞 𝐑𝐨𝐭𝐚𝐭𝐢𝐨𝐧: Our right angle usb c cable allows 360 degree rotation and is 180 degree rotation. Compared to traditional charging cables where the angle cannot be adjusted, the 90 degree usb c cable no longer interferes with your finger movements, which greatly improves your gaming experience.
- 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐢𝐥𝐢𝐭𝐲: This usbc to usbc cable with on/off switch can compatible with most type c devices such as Mac-Book Pro/Air, 1Pad series, 1Phone 17/16/15 Plus/15 Pro/15 Pro Max, Samsung Galaxy series, Google Pixel and other laptops, tablets & smartphones with USB-C.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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