Plugable BT-KEY3 foldable Bluetooth keyboard with included folding stand.

Plugable Compact Bluetooth® Folding Keyboard and Case image 1

Plugable Compact Bluetooth® Folding Keyboard and Case image 2

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Plugable Compact Bluetooth® Folding Keyboard and Case image 8

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Plugable Compact Bluetooth® Folding Keyboard and Case

$49.95 USD

SKU: BT-KEY3
Amazon Rating : (188 Reviews)

Features

Adaptable— Going out into the world? Take along a foldable Bluetooth keyboard. Tri-fold design flips out to 9.8 inches when you need it, folds away when you don’t. Quick charge battery lasts weeks, and it’s compatible with just about anything
Solid Build, Solid Battery— Anodized aluminum houses precision scissor-switch keys. USB-rechargeable Li-Ion battery holds enough power to keep you typing for weeks on a charge. Plus, this foldable small keyboard has a cool case that turns into a stand
Compatible— Yeah, it’ll work with that. More than an iPad keyboard, more than a computer keyboard. With compatibility modes for Android, iOS, Mac, Windows, and Linux, this multi device keyboard works with whatever you’re working on
Key Quality— High-quality scissor switches supply a satisfying sensation when tapping away on this wireless keyboard. Sounds like a soothing cascade of quiet clicks. Feels strong enough to lend emotional support (it doesn’t though)
2-Year Coverage, Lifetime Support— Every Plugable product, including this foldable Bluetooth keyboard, is covered against defects for 2 years and comes with lifetime support. If you ever have questions, contact our North American-based team - even before purchase

For volume orders or business inquiries contact sales@plugable.com

Size

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The Plugable BT-KEY3Xl in an image with a tablet, with a caption saying it is the perfect travel companion

A Keyboard for Your Phone or Tablet

The Plugable Folding Bluetooth Keyboard BT-KEY3 is small, convenient, and easy to use with any phone or tablet. Whether you’re texting, sending emails, or writing a report this keyboard is great for planes, coffee shops, and more! Yet, when you are ready to go, it folds smaller than a paperback book and fits right in a bag or briefcase with your tablet or phone.

Portable

Experience the ease of typing on a keyboard while away from your desk. The keys are slightly smaller than on a regular keyboard and have a crisp and familiar touch, with the precise scissor switch mechanism found on quality desktop and laptop keyboards.

Charging

Minutes of charging give you hours of use! Plug the keyboard into a USB charger or computer.

Outline graphic depicting the folding keyboard with its included stand

Use the Case as a Stand

The included case protects your keyboard when stowed, then a quick flip of the cover turns it into an adjustable stand for your phone or tablet. The fitted case is lined with soft microfiber on the inside to protect the keyboard with a soft leather-like surface on the outside.

Compatibility

The Plugable keyboard connects via both Bluetooth. It features USB charging and compatibility modes for iOS, Android, and Windows. A row of dedicated special keys and quick two-finger key combos give you lots of control over your devices, such as:

Esc, F1-12 (Fn + Top Row Keys): Windows
Media keys (Pause/Play, Forward, Back, Volume Up/Down): iOS, Android, Mac (iTunes)
Edit keys (Copy, Cut, Paste, Select All): iOS
and more!

In The Box

Item and Quantity	Item Notes
1x Plugable Bluetooth Foldable Keyboard
1x Case/Stand
1x USB 2.0 Type-A to Micro-B Cable

Included Cables

Port Type (Side 1)	Cable Specification	Port Type (Side 2)	Cable Length	External Power for Cable
Male USB Micro-B		USB-A	1.53m/5.02ft	No

LEDs

LED Number	Shape	Color	Status	Definition	Notes
1	Dot	Blue	Blinking	Bluetooth is broadcasting	Left LED
1	Dot	Red	Blinking	Battery low	Left LED
2	Dot	Green	Solid	Paired and ready to use	Right LED
2	Dot	Red	Solid	Charging	Right LED

Keyboard

Layout and Profile	Key Count	Switch Type	Legend and Keycap Material	Keyboard Lighting (Color)	Lighting Modes
Laptop ANSI Flat Profile	64-Key	Scissor	Silk Screen Print	None	None

Power

Port	Placement	Power Host / Device	Connection Type	AC Inlet	Notes	Voltage	Amperage	Wattage
USB-A to Any USB Charging Port	Cable End	Device				5.0V	200mA	1.0W

Connection To Host

Port	Placement	Version and Link Rate	Features
1x Bluetooth Classic	Internal	Bluetooth (2.1Mbps)

Bluetooth

Bluetooth Specification	Supported Profiles	Notable Unsupported Profiles	Bluetooth Class and Range	Chipset
Bluetooth 3.0	See Profile Compatibility Table		Class 2 10m/32ft

Physical Stats

Item	Size (H x W x D) or Length	Weight	SKU or Part Number
Bluetooth Keyboard	1.2 x 25.2 x 8.9 centimeters 0.5 x 9.9 x 3.5 inches	317 grams 11.2 ounces	BT-KEY3

Platforms

Any device that can use a Bluetooth keyboard should work with this keyboard. That includes Windows, Linux, macOS, iOS, and Android operating systems.

Bluetooth Profiles

This keyboard uses standard Bluetooth HID (Human Interface Device) profiles as part of the Bluetooth 3.0 specifications.

Popular Compatible Systems

Apple	Apple Vision Pro / iPad / iPad Pro, iPhone
Samsung Phones, Tablets and VR	Samsung Galaxy S23 / S23+ / S23 Ultra, S22 / S22+ / S22, S21 / S21+ / S21 Ultra, S10 / S10+ / S10e / S9 / S9+ / S8 / S8+, Note 20 / 20 Ultra / 10 / 9 / 8)
Google Phones and Tablets	Google Pixel 8 / Pro Pixel 7 Pro / 7 / 6 Pro / 6 / 5 / 4 XL / 4 / 3 XL / 3 / 2 XL / 2 / 1 XL / 1
Mac	MacBook Pro, MacBookAir, MacBook Retina, MacBook M1 / M2 / M3
Windows	HP Spectre x360 / Envy, Dell XPS / Precision / Latitude, Lenovo ThinkPad / IdeaPad, Surface Pro 7 / 7+ / 8 / 9 / X, Surface Laptop 3 / 4 / 5 / Go / Go 2 / Studio / SE, Surface Go / Go 2 / Go 3, and others
Chromebooks	Google Chromebooks, Google Pixelbook Go / Samsung Galaxy Chromebook 2 / Lenovo Chromebook Duet 3, and others

Get Started

Enable Bluetooth on your host device, and make it visible.
Unfold the keyboard to power it on.
Press Function (Fn) + c to put the keyboard in pairing mode. The blue light will flash.
Pair the keyboard from your host device's user interface.

Questions? We're here to help! Please reach out to us at support@plugable.com

Filter Help Articles and Frequent Questions by Category

Choose one or more filters within each category to narrow down the articles. Each selection will result in only displaying articles that include all of your choices.

Articles

Why can't I drive two external extended displays with my Google Pixel phone?

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Google Pixel phones support USB-C DisplayPort Alternate Mode for wired video output, but due to Android OS limitations, they cannot produce two extended external displays using MST, DisplayLink, or Thunderbolt docking technologies. This is a platform constraint, not a hardware or dock issue.

Understanding the Limitation

Google Pixel phones are limited by the Android operating system’s handling of external displays. While many Pixel models (such as the Pixel 7 and Pixel 8 series) support USB-C DisplayPort Alternate Mode, they can only output to a single external display at a time. Android is designed primarily for screen mirroring, and extended display support is extremely limited across Android phones.

Key Point:

Android OS currently restricts Pixel phones to one external display, regardless of the dock or adapter used.

Dock Behavior with Pixel Phones

MST Docks (e.g., Plugable UD-MSTH2)

MST (Multi-Stream Transport) requires the host device to support splitting one DisplayPort signal into multiple independent video streams. While common on Windows and many Chromebooks, Pixel phones do not support MST for extended displays.

When using an MST dock, a Pixel phone will:

Output to one external display only, or
Mirror the same content to two connected monitors
Dual extended desktops are not supported

DisplayLink Docks

DisplayLink technology works on Android through a companion app (e.g., DisplayLink Presenter). However:

Android only supports a single external display via DisplayLink
DisplayLink docks cannot be used to achieve multiple extended monitors from a Pixel device
DisplayLink is not recommended for dual display use on Android

Thunderbolt Docks

Google Pixel phones are not Thunderbolt-certified hosts. When connected to a Thunderbolt dock:

They revert to basic USB-C DisplayPort Alternate Mode
Only a single mirrored display is possible

Visual Summary

Dock Type	Extended Displays	Mirroring	Notes
MST Dock	❌	✅	No MST support on Android
DisplayLink Dock	❌	✅	Requires DisplayLink app
Thunderbolt Dock	❌	✅	Functions as USB-C only

Recommended Alternatives

If your goal is to use two independent external displays, consider the following instead:

Windows laptops with DisplayPort MST support
Chromebooks that support MST

Frequently Asked Questions

Q: Can I extend my Pixel’s screen to two monitors using any method?
A: No. As of now, Android does not support multiple extended displays. Only mirroring to one display is possible.

Q: Does DisplayLink allow multiple displays on Android?
A: No. Even with DisplayLink’s Android app, you are limited to one external display.

Q: Why do Windows and ChromeOS devices work with MST but not Android?
A: Android lacks support for DisplayPort MST and advanced GPU capabilities required for multiple display outputs. This is a software/platform-level limitation.

Conclusion

While Google Pixel phones are capable of driving a single external display, dual extended monitors are not possible due to Android OS restrictions. This applies across all dock types, including MST, DisplayLink, and Thunderbolt. For users requiring robust multi-display setups, we recommend using a Windows or Chromebook device that supports MST alongside a compatible docking station like the Plugable UD-MSTH2.

If you have any questions or need help selecting a compatible dock, reach out to our support team at support@plugable.com.

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Can My Bluetooth Folding Keyboard Be Used While Charging?

BT-KEY3—Yes, the Bluetooth keyboard will work while it is charging and connected via Bluetooth to the host.

BT-KEYXL—Yes, the Bluetooth keyboard will work while it is charging and connected either via Bluetooth or USB to the host.

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What Do the Lights on the Bluetooth Folding Keyboard Mean?

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This article explains what the LED keys on Plugable Folding keyboards indicate when they light up.

BT-KEY3XL:

Light	Status
Power LED in Red	The keyboard is charging through the USB port. It will go out when charging is finished.
Power LED in Green	The keyboard has sufficient charge for operation. (Turns on when opening the keyboard, then turns off.)
Power LED in Green - flashing	You can check the keyboard's charge level by pressing Fn + Right Alt. This LED indicates the battery level from 4 flashes (full battery) to 1 flash (needs charging).
State LED in Blue - flashing	The keyboard is broadcasting its existence through Bluetooth and can be discovered by your computer, tablet, or phone. (Press Fn + C to enter Bluetooth parting mode)
State LED in Green	The keyboard is operating in USB mode *)
Caps LED in Blue	Caps Lock is on.

*) Switching USB / Bluetooth mode:

Fn + 1 : Bluetooth mode
Fn + 2 : USB mode

BT-KEY3:

Light	Status
Left LED in Blue - flashing	The keyboard is broadcasting its existence through Bluetooth and can be discovered by your computer, tablet, or phone. (Press Fn + C to enter Bluetooth parting mode.)
Left LED in Red - flashing	The battery needs charging.
Right LED in Green	The keyboard is ready to use. (Turns on when opening the keyboard, then turns off.)
Right LED in Red	The keyboard is charging through the USB port. It will go out when charging is finished.

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