Another ups i would like to recommend is APC CS series: APC CS Series is specially designed for PC users. This series is also suitable for use with computer peripherals or POS and will become an attractive piece of equipment in the office or at home. The CS Series adopts the latest SMD technology plus Santak's on-line UPS high frequency technology to achieve a technical breakthrough of 40KHz operating frequency. From the following table and the picture I provide you, I think you will like its space-saving compact size and their elegant appearance. The backup time for PC is 8mins. It has self-check function at the moment of start to protect the PC computer against UPS fault. UPS always scout the battery voltage, when overload and over-discharge happened, charge and discharge will be stopped automatically.