To choose a good computer scanner when shopping online, consider the type and features of the scanner you wish to buy, as well as the resolution, sensor and connectivity. If you want a specific brand, it is better to purchase directly from the brand's website. If you purchase from other websites, ensure you work with an online seller who has many positive reviews and who offers a money-back guarantee in case the scanner does not work as required.
Buy the type of scanner that meets your specific needs. Some of the scanners sold online include flatbed scanners, portable scanners, handheld scanners, sheet fed scanners and drum scanners. Conduct research on the various features of scanners and choose the one that fulfills your requirements. The scanner should provide the image quality you are looking for. Know the type of images or documents you intend to scan and choose a scanner that has the right bit depth, sensor and resolution.
Consider a scanner's connectivity based on the capabilities of your computer. Some of the different ways scanners connect to computers include through a universal serial bus, a parallel port or firewire. These different connectivity methods determine the scanning speed of the scanner.
Popular scanner brands include Hewelett-Packard, Canon and Epson. If you want to buy these brands online, visit their website or a trusted online retailer. If you wish to purchase from individuals sellers online, choose a seller who has a lot of positive reviews and a money-back guarantee in case the scanner does not work as promised.