The HP ProBook 640 G4 is a business-oriented laptop that offers a balance of performance, security, and portability. It belongs to HP’s ProBook series, which is known for catering to professional users. While I don’t have access to information beyond September 2021, I can provide you with a general overview of what the ProBook 640 G4 typically offers:

1. Design and Build: The ProBook 640 G4 is designed with a professional aesthetic, typically featuring a durable and sturdy build suitable for business environments. It often incorporates a sleek and minimalistic design.
2. Display: It likely comes with a 14-inch display, which is a common size for business laptops. The display resolution may vary, with options for Full HD (1920 x 1080) or higher, providing sharp visuals for work tasks.
3. Performance: The laptop is powered by Intel Core processors, offering a range of performance levels to cater to different business needs. It might include options for both integrated and dedicated graphics, allowing for tasks ranging from office work to light graphics processing.
4. Memory and Storage: The laptop probably supports a range of RAM configurations, allowing you to choose the amount of memory you need. Similarly, it might offer various storage options including solid-state drives (SSD) for fast data access.
5. Connectivity: Expect a selection of ports including USB-A and USB-C, HDMI, audio jacks, and potentially an Ethernet port. Wireless connectivity options should include Wi-Fi and Bluetooth.
6. Security Features: Business laptops often prioritize security. The ProBook 640 G4 might come equipped with features like a fingerprint reader, TPM (Trusted Platform Module) for hardware-based security, and facial recognition.
7. Battery Life: While the exact battery life can vary based on usage and configuration, ProBook models usually aim to provide decent battery longevity for a full day’s work.
8. Operating System: It would likely come with Windows 10 or a later version of Windows, as these are common operating systems in business environments. However, the availability of different configurations can lead to variations in the pre-installed software.
9. Durability and Reliability: The ProBook series is often designed to withstand the rigours of daily business use, including durability features that enhance its lifespan.

Remember that specifications can vary based on the specific configuration you choose. If you’re considering purchasing the HP ProBook 640 G4 or any other laptop, it’s a good idea to check with the manufacturer or retailer for the most up-to-date information on its features and specifications.