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* Rock Direct * Hewlett Packard - HP Pavilion and HP Omnibook * Notebook processor: There are a wide range of notebook processors available from Intel (Pentium M (with Centrino technology), Celeron, Intel Core Duo and Centrino Duo) and from AMD (Athlon, Turion 64, and Sempron). Motorola and IBM develop and manufacture the PowerPC chips for Apple notebooks. Generally, notebook processors are less powerful than their desktop counterparts, owing to the need to conserve electricity and reduce heat output. However, the PowerPC G3 and G4 processor generations have been able to offer almost the same performance as their desktop versions, limited mostly by lower performance in other parts of the system bus bandwidth and peripheral units) in Apple's notebooks; recently, though, with the introduction of the G5s, they have been far outstripped. At one point, the Pismo G3, at up to 500 MHz, was faster than the fastest desktop G3 (then the B&W G3), which ran at 450 MHz. * Dell - Inspiron and Latitude * Portable computer * Rock Direct Upgradability is severely limited: typically only the RAM and hard drive can be upgraded. Often the CPU can also be replaced, and sometimes video card modules are upgradable too. Many laptops also include a MiniPCI slot inside, however it is usually not intended to be utilized by the end user. Because nearly all functions are integrated into the proprietary-design mainboard theoretically to save space and power, laptops are difficult to repair and upgrade. Outright replacement of faulty parts can include the display screen, drives, daughterboards, modem, storage devices and other components, but repair costs can be high, even when feasible (low upgradability). There is not a standard for A4-size laptops.

* Overam - Mirage series Laptops usually run on batteries, but also from adapters which also charge the battery using mains electricity. * Averatec * Sony - VAIO * Lenovo - IBM ThinkPad * Toshiba - Dynabook, Equium, Portege, Tecra, Satellite, Qosmio, Libretto By the end of the 1980s, laptop computers were becoming popular among business people. The NEC Ultralite, released in mid-1989, was perhaps the first notebook computer, weighing just over 2 kg; in lieu of a floppy or hard drive, it contained a 2-megabyte RAM drive, but this reduced its utility as well as its size. The first notebook computers with standard drives were the Compaq LTE series, introduced toward the end of that year. Truly the size of a notebook, they had hard drives and standard-resolution screens.

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* Dell - Inspiron and Latitude * Gericom * Rock Direct * LG - XNOTE * Hypersonic * Sharp - Mebius Laptops & laptop brands * Notebooks weighing around 5 kg are sometimes termed desknotes (desktop/notebook). * Tadpole - SPARCbook

* Notebook The Apple PowerBook series, introduced in 1991, heralded many changes that are now standard on laptops, including ergonomic improvements such as the placement of the keyboard at the back of the machine, thus creating a palm rest, and the inclusion of a built-in pointing device (a trackball). The following year, IBM released its Thinkpad series, offering similar miniaturization. * Hewlett Packard - HP Pavilion and HP Omnibook Misconceptions about laptops * Samsung - Sens Later PowerBooks introduced the first 256-color displays, first true touchpad, and first built-in Ethernet networking.