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 DisplayPort 1 DIRECTIVE (EU) 2022/2380 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 November 2022 (Part III) y HP ProBook 6555b Notebook PC, AMD Phenom II, 2.2 GHz, 39.6 cm (15.6"), 4 GB, 500 GB, Windows 7 Professional HP ProBook 6555b Notebook PC. 處理器系列: AMD Phenom II, 處理器類型: N850, 處理器頻率: 2.2 GHz. 顯示器尺寸(對角長): 39.6 cm (15.6"). 內部記憶體: 4 GB, 內部記憶體類型: DDR3-SDRAM. 總儲存空間: 500 GB, 光碟機: DVD Super Multi DL 雙層燒錄. 獨立顯示卡型號: AMD Mobility Radeon HD 4250. 提供作業系統: Windows 7 Professional. 重量: 2.51 kg