ProtoArc K100-A Backlit Bluetooth Keyboard for Mac

1 / 7

Product guide

ProtoArc K100-A Backlit Bluetooth Keyboard for Mac

Backlit: The ProtoArc K100-A is a full-size Bluetooth keyboard for Mac with low-profile keys, adjustable white backlighting and a rechargeable battery. Its numeric keypad and three-device switching suit desk setups that move between compatible devices, while the full-size layout needs more room than a compact keyboard.

At a glance

Three brightness levels of white LED backlighting are claimed for typing in dim rooms.
The full-size Mac layout includes a numeric keypad, with 104 keys listed.
Bluetooth switching lets you pair with up to three devices and select between them using a mode button.
Rechargeable power and scissor-switch, low-profile keys are listed. The maker says the keys are quiet to type on.
The listing says it enters sleep mode after 60 minutes of inactivity. Backlighting must be turned on again after waking. The battery runtime is not specified.

Price

$39.99Save 20%

Reference price: ~~$49.99~~

Price checked: Nov 13, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

ProtoArc K100-A Backlit Wireless Bluetooth Keyboard for Mac - Space Gray | Full-Size Mac Layout with Numeric Keypad, 3-Level

$31.99

Pros and cons

Pros

A numeric keypad and full-size layout provide dedicated keys for number entry and everyday desk use.
Adjustable white backlighting gives a choice of three brightness levels.
Three Bluetooth channels allow switching among paired devices without a USB receiver.
The low-profile scissor-switch design is described as quiet, and the battery is rechargeable.

Cons

The full-size design takes more desk space than compact keyboards.
Media and function keys may not work on Windows, and the product is described as primarily for macOS.

Technical specifications

11 specifications

Identity and layout
Brand	ProtoArc
Model	K100-A
Layout	QWERTY
Number of keys	104
Keyboard description	Backlit

Connectivity and compatibility
Wireless connection listed	Bluetooth
Compatible devices	Laptop
Compatible operating system family	MacOS
Minimum required operating system version	Mac OS 10.12 Sierra

Power
Power configuration	Battery Powered

Size and weight
Parcel dimensions	44.5 x 16.5 x 2.5 cm; 840 g

What to know before buying

The maker lists compatibility with macOS 10.12 or later and iOS or iPadOS 13.0 or later, but describes the keyboard as primarily for macOS. It also says devices older than 2013 are incompatible. Windows media and function-key support is limited. Battery runtime is unspecified, and backlighting needs to be re-enabled after sleep.

What’s in the box

KeyboardCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Mac users wanting a full-size layout and numeric keypad for everyday desk typing.
People who want adjustable backlighting and plan to switch the keyboard between as many as three Bluetooth devices.

Less suited to

Buyers who need a compact keyboard or have limited desk space.
Windows users who rely on media and function keys, or buyers who need a stated battery-runtime estimate.

ProtoArc K100-A Backlit Bluetooth Keyboard for Mac · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.1 / 5 · 192 ratings

5 stars62%62%
4 stars16%16%
3 stars7%7%
2 stars5%5%
1 star10%10%

Customer feedback describes the keyboard as responsive, with keys that work as expected, and gives positive impressions of quality, appearance and key feel. Connectivity and battery life receive mixed feedback. Those concerns matter for buyers relying on stable Bluetooth switching or long intervals between charging, especially since no battery runtime is stated. The overall rating distribution leans positive but also includes lower ratings, so it does not establish consistent performance for every setup.

Positive themes

Customers report responsive keys and positive impressions of quality, appearance and typing feel.

Mixed feedback

Customer feedback is mixed on connectivity and battery life.

Frequently asked questions

How many devices can the K100-A connect to?

The listing says it can connect to three devices over Bluetooth and switch between them with a mode button. It does not include a USB receiver.

Does it work with Windows?

It is designed primarily for macOS. The listing warns that media and function keys may not work on Windows.

What operating systems are listed as compatible?

The listing specifies Mac OS 10.12 Sierra or later and iOS or iPadOS 13.0 or later. It also says devices older than 2013 are not compatible.

How long does the battery last?

No runtime is specified. The listing says the keyboard sleeps after 60 minutes of inactivity and that backlighting needs to be turned on again after waking.