US Version Keyboard for HP probook 4540 4540S 4545 4545S, For HP probook 4540 (US)1. US version computer keyboard for HP probook 4540 4540S 4545 4545S. 2. Replace your broken or unworkable part with a new one. 3. Each item has been checked and in good condition before shipping. 4. Completely fit and work. 5. Highly recommend professional installation. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts. Specification: General Compatible with HP: ProBook 4540s Package

40HQ: 545 cartons * 100 pcs = 54500 pcs

Pixel density PPI: 396

beautiful hair through effective styling tools that make every blowout more efficient and luxurious throughout their hair care journey

as we cannot be held responsible once installed

making it simple to reposition for different cooking tasks without lifting

Wireless reception range: 10m

let you wont miss any important calls；

gold-plated contacts ensure the stability of signal transmission

which allows you to measure distance for 2000 times when fully charged

and can bring the ultimate high-definition experience

Light effect mode: 21 kinds

Package Include Package Contents 1 x Manual