How can I connect this to my custom made desktop pc?

t's a bluetooth keyboard, so via bluetooth, naturally. Your custom made desktop pc must have a bluetooth card or usb dongle etc

What does the top left key on the keyboard do?

It is the escape key, also is back in android.

Does it work with OS X (Macbook Pro)?

yes, obviously it is a windows keyboard so it is a little different. The windows super key is the "command' equivalent. But is works fine. Even the sleep, volume and media keys work

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HP K4000 Wireless Bluetooth Keyboard for PC/ Tablet / Smartphone (E5J21AA#ABA)

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81 Chiclet-style keys
Android and Windows function keys
Optional number entry
LED power light
PC compatible

Overview

Specs

Reviews (19)

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The ideal cross-platform user interface, HP's Multi-OS Bluetooth ® Keyboard, provides wireless convenience and the flexibility to operate with Android™ or Windows platforms.

Model
Brand	HP
Name	K4000
Model	E5J21AA#ABA

Keyboard
Design Style	Slim
Palm Rest	No
Keyboard Color	Black
Dimensions	0.59" x 10.43" x 4.61"
Type	Bluetooth Wireless

Mouse
Mouse Included	No

Wireless
Distance	30 feet

OS / System Requirement
Operating System Supported	Systems with Bluetooth, Android 3.0 and later or Microsoft Windows Vista / 7 / 8

Features
Features	Don't limit your productivity. Work seamlessly between Android or Windows platforms - including Windows 8 - when using the HP Slate or other top Android tablets. No wires, no dongles, all connection. Bluetooth is the standard for dongle-less connectivity allowing you to comfortably detach from the computer or tablet for up to 30 ft (10m) away. The streamlined keyboard is reduced in size but not function. Slightly angled for comfort and designed with appeal with a glossy white backing and opposing black surface. Systems with Bluetooth, Android 3.0 and later or Microsoft Windows Vista/7/8

Additional Information
First Listed on Newegg	May 29, 2014

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 90 days
Limited Warranty period (labor): 90 days
M. Segue Corporation
Support Phone: 949-589-5040
Support Email: [email protected]
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Return Policies

Return for refund within: 30 days

Return for replacement within: 30 days

This item is covered by Newegg.com's 30-Day Return Policy. Read full return policy for details.

HP K4000 Wireless Bluetooth Keyboard for PC/ Tablet / Smartphone (E5J21AA#ABA)

Refurbished

Learn more about the K4000

Customer Reviews of K4000

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: N82E16823700177

HP K4000 Wireless Bluetooth Keyboard for PC/ Tablet / Smartphone (E5J21AA#ABA)

Refurbished

Learn more about the K4000

Customer Reviews of K4000

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info