Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Y ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR <b>Higher Performance When You Need It Most</b> Intel® Turbo Boost Technology 2.01 accelerates processor and graphics performance by increasing the operating frequency when operating below specification limits. The maximum frequency varies depending on workload, hardware, software, and overall system configuration. 2.0 Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. Y You can spend more time running your business and less time concerned with IT when you have Windows 10 Pro. Build-in security, enhanced productivity features, and easy-to-implement management tools provide an essential foundation to keep your business humming. Windows 10 Pro When performance is your priority, rely on proven, trusted technology. With the cylindrical lithium-ion battery cell your laptop gets stable power that’s great for high-performance devices. Lithium-Ion (Li-Ion) Amazing performance, blazing fast startups, brilliant HD video, and graphics, battery life that lasts as long as you do, and speed that keeps up with your imagination, that's what you'll find in the 6th Gen Intel® Core™ processors—Intel's best ever. Intel Core i5-6xxx DisplayPort 1 Hard Drive HDD USB 3.2 Gen 1 (3.1 Gen 1) Type-C port 1 HP ProBook 640 G2, Intel® Core™ i5, 2.3 GHz, 14", 1366 x 768 pixels, 4 GB, 500 GB HP ProBook 640 G2. Product type: Laptop, Form factor: Clamshell. Processor family: Intel® Core™ i5, Processor model: i5-6200U, Processor frequency: 2.3 GHz. Display diagonal: 14", Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR4-SDRAM. Total storage capacity: 500 GB, Storage media: HDD, Optical drive type: DVD-ROM. On-board graphics card model: Intel® HD Graphics 520. Operating system installed: Windows 10 Pro. Product color: Silver https://www.notebookcheck.net/HP-ProBook-640-G2-Notebook-Review.171216.0.html Successful reiteration. High-quality input devices, a Full HD panel, long battery life - it seems as if HP has bundled a convincing office package with its ProBook 640 G2. Unfortunately, some weaknesses in details ruin the otherwise good overall impressio... casing's solid build, optical drive, high-quality input devices, bright Full HD panel, good application performance, low temperature development, long battery life, integrated LTE module relatively big and bulky, throbbing fan, viewing-angle dependent TN panel, unfavorable interface layout Although some more elegant and slimmer office laptops than the ProBook 640 G2 exist, HP has undoubtedly bundled an interesting total package regarding the other qualities of the 14-inch device. Only a few rivals can offer an optical drive and a VGA-out. T...