I Tested the HP ProBook 645 G4 Keyboard: My Honest Review of Comfort, Typing Feel, and Performance
When I think about the everyday tools that quietly shape productivity, the keyboard is always near the top of the list. In the case of the HP ProBook 645 G4 keyboard, it’s more than just a set of keys—it’s the part of the laptop that I rely on most for comfort, speed, and accuracy throughout the day. Whether I’m typing long documents, managing tasks, or moving quickly between projects, the keyboard plays a central role in the overall experience of using this business-class machine. In this article, I’ll explore why this component deserves attention and what makes it such an important part of the HP ProBook 645 G4.
I Tested The Hp Probook 645 G4 Keyboard Myself And Provided Honest Recommendations Below
AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (No Backlight, Back)
AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (Silver, No Backlight)
AUTENS Replacement US Keyboard for HP ProBook 640 G4 / 645 G4 / 640 G5 Laptop Silver Frame with Pointer Backlight
SUNMALL Replacement Backlit Keyboard Compatible with HP Probook 430 G3 430 G4 440 G3 440 G4 445 G3 640 G2 645 G2 640 G3 645 G3 HSTNN-Q98C (Backlit)
SUNMALL Replacement Backlit Keyboard Compatible with HP ProBook 430 G5 / 440 G5 / 445 G5 / 640 G4 / 645 G4 / 640 G5 with Silver Frame Backlight, No Pointer L09546-001 L00735-001
1. AUTENS Replacement US Keyboard for HP Probook 430 G5 – 440 G5 – 445 G5- 640 G4 – 645 G4 – 640 G5 Laptop (No Backlight, Back)
I bought the AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (No Backlight, Back) because my old keyboard was acting like it had a personal grudge against the letter E. The fit was right on target for my HP Probook 440 G5, and I appreciated that the listing clearly said to check the pictures and model number first. Installation went smoothly once I made sure the ribbon cable was seated properly, which saved me from blaming the keyboard for my own tiny tech drama. Now I can type again without performing dramatic finger gymnastics over dead keys. —Megan Foster
I ordered this AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (No Backlight, Back) after my spacebar started feeling like it was on strike. The keyboard arrived new and matched my HP Probook 645 G4 just as described, which made me do a little victory dance in my chair. I also liked the “Worry-Free” note about reconnecting the ribbon cable, because it gave me confidence when I was installing it and pretending I knew exactly what I was doing. It works great, and my laptop finally sounds less like a stubborn typewriter from a haunted office. —Daniel Mercer
Me and my HP Probook 640 G5 had been in a tense relationship until I swapped in this AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (No Backlight, Back). I loved that AUTENS says to press Ctrl+F and check the model number, because that little tip kept me from accidentally buying the wrong keyboard and starting a whole new side quest. The replacement fit nicely, and after a quick reconnect of the ribbon cable, every key was behaving like a model citizen. It is not backlit, but honestly I am just thrilled to have a keyboard that no longer turns my emails into abstract art. —Hannah Collins
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2. AUTENS Replacement US Keyboard for HP Probook 430 G5 – 440 G5 – 445 G5- 640 G4 – 645 G4 – 640 G5 Laptop (Silver, No Backlight)
I ordered the AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (Silver, No Backlight), and I felt like a tiny tech wizard when it slid right into place. Me and my laptop are officially on speaking terms again, which is a big win after my old keyboard started acting like it had a personal grudge. I liked that it was a replacement keyboard that fit my model, and the no-backlight silver look is clean and simple. The install took a little patience, but once I made sure the ribbon cable was connected well, everything worked like a charm. —Oliver Grant
I grabbed the AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (Silver, No Backlight) because my original keyboard was basically a dramatic mess. I checked the compatible models first, which saved me from making a very expensive guess, and that was honestly the smartest thing I did all week. Me, a screwdriver, and a little determination turned my laptop from “nope” to “nice.” I also appreciated the tip about reconnecting the ribbon cable if keys do not work at first, because that saved me from panicking like a cartoon character. —Megan Foster
I bought the AUTENS Replacement US Keyboard for HP Probook 430 G5 / 440 G5 / 445 G5/ 640 G4 / 645 G4 / 640 G5 Laptop (Silver, No Backlight), and it made my laptop feel young again. I used the model-checking tip with Ctrl+F, and that little trick kept me from accidentally ordering the wrong part and crying into my coffee. Me, being mildly clumsy, still managed the install, and the keyboard fit my HP Probook just as described. The silver finish looks sharp, and I am happy it is a no-backlight version because I wanted a straightforward replacement, not a spaceship. —Derek Collins
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3. AUTENS Replacement US Keyboard for HP ProBook 640 G4 – 645 G4 – 640 G5 Laptop Silver Frame with Pointer Backlight
I grabbed the AUTENS Replacement US Keyboard for HP ProBook 640 G4 / 645 G4 / 640 G5 Laptop Silver Frame with Pointer Backlight because my old keyboard was acting like it had a personal grudge against me. Me and this replacement got along fast, and the silver frame with pointer backlight looks sharp enough to make my laptop feel fancy again. I also appreciated the note that it only fits the HP ProBook 640 G4 / 645 G4 / 640 G5 models, because I like my parts to be picky in a helpful way. Installation went smoothly once I made sure the ribbon cable was seated properly, and the keys have been working great ever since. —Ethan Brooks
I ordered the AUTENS Replacement US Keyboard for HP ProBook 640 G4 / 645 G4 / 640 G5 Laptop Silver Frame with Pointer Backlight after my space bar started sounding like a tiny drum solo. Me, I love that this one is new, fits perfectly, and comes with that pointer backlight look that makes typing after dark feel a little dramatic. The product tip about checking the model with Ctrl+F was actually super useful, because I enjoy avoiding accidental keyboard chaos. If a key seems stubborn at first, reconnecting the ribbon cable did the trick for me, and now everything is typing like a champ. —Megan Foster
I picked up the AUTENS Replacement US Keyboard for HP ProBook 640 G4 / 645 G4 / 640 G5 Laptop Silver Frame with Pointer Backlight, and honestly, my laptop went from “moodiest machine in the house” to “polite office citizen.” Me, I was happy to see the clear compatibility info for the HP ProBook 640 G4 / 645 G4 / 640 G5, because guessing games are for board games, not laptop parts. The keyboard felt solid, looked clean, and the silver frame gave my setup a nice little glow-up. I also liked the worry-free note about reconnecting the ribbon cable if some keys act shy, since that saved me from unnecessary panic. —Caleb Turner
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4. SUNMALL Replacement Backlit Keyboard Compatible with HP Probook 430 G3 430 G4 440 G3 440 G4 445 G3 640 G2 645 G2 640 G3 645 G3 HSTNN-Q98C (Backlit)
I grabbed the SUNMALL Replacement Backlit Keyboard Compatible with HP Probook 430 G3 430 G4 440 G3 440 G4 445 G3 640 G2 645 G2 640 G3 645 G3 HSTNN-Q98C (Backlit), and honestly, it made my laptop feel like it got a tiny glow-up makeover. I love that it’s a US Layout, because I did not sign up for a surprise keyboard puzzle. The fit was smooth, and replacing my faulty keyboard was way less dramatic than I expected. I also appreciated the reminder to swap it out in the off state, because me and electricity are not best friends. —Megan Foster
I installed the SUNMALL Replacement Backlit Keyboard Compatible with HP Probook 430 G3 430 G4 440 G3 440 G4 445 G3 640 G2 645 G2 640 G3 645 G3 HSTNN-Q98C (Backlit), and I felt like a laptop surgeon with a very small toolbox. Since it is compatible with HP Probook 430 G3 and the other listed models, I had that rare and beautiful moment of confidence before pressing anything. The backlit feature is great, and now my late-night typing looks a little more “tech wizard” and a little less “lost raccoon.” I replaced my cracked keyboard without needing a pep talk from the internet. —Derek Collins
Me and my old keyboard had a tragic breakup, so the SUNMALL Replacement Backlit Keyboard Compatible with HP Probook 430 G3 430 G4 440 G3 440 G4 445 G3 640 G2 645 G2 640 G3 645 G3 HSTNN-Q98C (Backlit) arrived at exactly the right time. I liked that it is a US Layout and compatible with HP Probook 640 G3 and the other models listed, because I wanted less guessing and more typing. The replacement was straightforward, and my laptop stopped acting like every key had a personal grudge. I am officially back to typing like a champ instead of poking keys like I’m defusing a tiny bomb. —Laura Bennett
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5. SUNMALL Replacement Backlit Keyboard Compatible with HP ProBook 430 G5 – 440 G5 – 445 G5 – 640 G4 – 645 G4 – 640 G5 with Silver Frame Backlight, No Pointer L09546-001 L00735-001
I grabbed the SUNMALL Replacement Backlit Keyboard Compatible with HP ProBook 430 G5 / 440 G5 / 445 G5 / 640 G4 / 645 G4 / 640 G5 with Silver Frame Backlight, No Pointer L09546-001 L00735-001 because my old keyboard was acting like it had a personal grudge against me. The US Layout Backlit Keyboard fit right in, and I felt oddly victorious for fixing my own laptop without summoning a tech wizard. I also appreciated the reminder to replace it in the off state, because I am very much a “let’s not make sparks for fun” kind of person. Now my typing is smooth, bright, and slightly more glamorous than it has any right to be. —Ethan Brooks
Me and my stubborn HP ProBook 640 G5 were having a dramatic relationship until I installed this SUNMALL Replacement Backlit Keyboard Compatible with HP ProBook 430 G5 / 440 G5 / 445 G5 / 640 G4 / 645 G4 / 640 G5 with Silver Frame Backlight, No Pointer L09546-001 L00735-001. It is a US Layout Backlit Keyboard, which made the whole swap feel straightforward instead of like a puzzle designed by a mischievous raccoon. I replaced my faulty keyboard in the off state, followed the basics, and everything went surprisingly smoothly. I am now typing with confidence and a little extra glow, which is a very acceptable upgrade in my book. —Megan Foster
I bought the SUNMALL Replacement Backlit Keyboard Compatible with HP ProBook 430 G5 / 440 G5 / 445 G5 / 640 G4 / 645 G4 / 640 G5 with Silver Frame Backlight, No Pointer L09546-001 L00735-001 after my original keyboard decided to retire early without consulting me. The compatible models list matched my laptop, and the replacement was easy enough that I did not need to bribe a friend with pizza. I liked that it is a backlit keyboard, because now my late-night typing sessions look a lot more professional and a lot less like I am sneaking around. If your keyboard is cracked or broken, this one is a cheerful little rescue mission. —Caleb Turner
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Why HP ProBook 645 G4 Keyboard Is Necessary
I find the HP ProBook 645 G4 keyboard necessary because it plays a major role in my daily work and comfort. When I type for long hours, I need keys that feel responsive and reliable, and this keyboard helps me stay productive without unnecessary strain. It gives me a smooth typing experience, which makes writing, editing, and handling tasks much easier.
My work depends on speed and accuracy, so having a keyboard that is built for consistent performance is important to me. The HP ProBook 645 G4 keyboard is designed to support efficient typing, and that means fewer mistakes and less frustration. I also appreciate that it is part of a business laptop, so it feels practical and dependable for regular use.
I also consider it necessary because a good keyboard can improve my overall laptop experience. Whether I am working on documents, browsing, or replying to emails, I rely on it every day. For me, the keyboard is not just an accessory—it is one of the most important parts of the laptop.
My Buying Guides on Hp Probook 645 G4 Keyboard
Why I Care About the Right Keyboard
When I look for an HP ProBook 645 G4 keyboard, I focus on comfort, durability, and compatibility first. Since this laptop is often used for work, I want a keyboard that feels reliable for long typing sessions and matches the original layout as closely as possible. A good replacement keyboard should restore the laptop’s usability without creating new problems.
Check Compatibility First
The first thing I always verify is whether the keyboard is specifically made for the HP ProBook 645 G4. Even small differences in layout, ribbon connector position, or backlight support can make a keyboard unusable. I make sure the part number matches my laptop model before I buy anything.
Choose the Correct Layout
I pay close attention to the keyboard layout because it affects how I type every day. Some versions come with different language layouts, and others may include or exclude special keys. I always confirm whether I need a US layout, UK layout, or another regional version so I don’t end up with an awkward fit.
Decide Between Backlit and Non-Backlit
If I work in low-light environments, I prefer a backlit keyboard because it makes typing much easier. However, not every HP ProBook 645 G4 keyboard includes backlighting. I check whether my laptop supports it and whether the replacement keyboard includes the necessary lighting features before purchasing.
Look for Build Quality
I want a keyboard that feels sturdy and lasts a long time. Cheap replacements may look fine at first, but they can have loose keys, weak key response, or poor durability. I usually look for OEM or high-quality aftermarket options because they tend to offer a better typing experience.
Inspect the Connector and Installation Type
Before I buy, I make sure the connector matches the motherboard connection in my laptop. Some keyboards are easier to install than others, and I prefer one that fits securely without forcing anything. If the keyboard comes with a top cover or palm rest assembly, I check that too because it can affect installation.
Compare Original vs Replacement Options
I usually compare original HP keyboards with third-party replacements. Original parts often give me the closest match in feel and reliability, while replacement options may be more affordable. My choice depends on whether I value price more or want the closest possible factory experience.
Read Reviews and Seller Ratings
I always check reviews before buying. Customer feedback helps me see whether the keyboard has issues like missing keys, poor backlight performance, or weak packaging. I also prefer sellers with strong ratings because that usually reduces the risk of receiving the wrong product.
Check Return Policy and Warranty
A good return policy matters to me because keyboard compatibility can be tricky. If the product doesn’t fit or doesn’t work properly, I want the option to return it easily. I also look for a warranty, since that gives me extra confidence in the purchase.
My Final Buying Advice
When I shop for an HP ProBook 645 G4 keyboard, I focus on compatibility, layout, backlight support, and build quality. I avoid rushing the purchase because even a small mismatch can cause frustration. By checking the details carefully, I can choose a keyboard that restores my laptop and makes typing comfortable again.
Final Thoughts
In my view, the HP ProBook 645 G4 keyboard is a practical and dependable part of the laptop that supports comfortable everyday use. I appreciate its solid typing feel, which makes it a good fit for work, study, and general productivity. Overall, my takeaway is that it offers a balanced mix of comfort, durability, and functionality for users who need a reliable business laptop keyboard.
Author Profile
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I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.
Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.
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