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 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) 4th Generation Intel® Core™ processors are based on Intel® microarchitecture formerly known as Haswell, manufactured on 22 nm process technology with 3D tri-gate transistors. This platform provides excellent CPU, graphics, media performance, flexibility, and enhanced security over the 3rd generation Intel® Core™ processors, making it ideal for a broad range of intelligent systems. Intel Core i5-4xxx DisplayPort 1 Numeric keyboard Y Hard Drive HDD DIRECTIVE (EU) 2022/2380 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 November 2022 (Part III) y HP ProBook 6540b, Intel® Core™ i5, 2.26 GHz, 39.6 cm (15.6"), 1600 x 900 pixels, 2 GB, 320 GB HP ProBook 6540b. Product type: Laptop, Form factor: Clamshell. Processor family: Intel® Core™ i5, Processor model: i5-430M, Processor frequency: 2.26 GHz. Display diagonal: 39.6 cm (15.6"), HD type: HD+, Display resolution: 1600 x 900 pixels. Internal memory: 2 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB, Storage media: HDD, Optical drive type: DVD Super Multi DL. Operating system installed: Windows 7 Professional. Product colour: Black https://www.itpro.co.uk/622555/hp-probook-6540b-review The last ProBook we saw - in the middle of last year - was supposed to mark HP’s reinvention of its business laptop brand. And, true to its moniker, the 4510s was sleek, glossy and one of the best-looking corporate machines around.We were surprised, then, when... It’s not flashy, but the dour-looking ProBook ticks the right boxes elsewhere: Intel’s Core i5 processor means that there’s plenty of power available, battery life is on the right side of five hours, and build quality is top-notch.Couple this with an e... https://www.alphr.com/hp/hp-probook-6540b/30780/hp-probook-6540b-review/ Next to the aesthetic excesses of its recent Envy range, HP's ProBook line is an altogether more sober affair. Aimed at the small-to-medium business market, the latest addition to the family, the ProBook 6540b, partners an Intel Core i5 processor with ... Bulky and dour, but solid performance and battery life make it a reasonable office choice ...