Electrical appliances and computers
In Slovakia, 230 V/50 Hz electrical system is used and appliances are designed for a round pin plug and receptacle (socket) with a male grounding pin. For safety and to avoid damage to electrical appliances, it is important to bring equipment designed for the above-mentioned frequency and voltage and use dual-voltage equipment or voltage converters/transformers. Moreover, plug adapter will also be needed, if your device is constructed for other standards.
For those bringing US standard equipment, an earthed (grounded) step-down transformer is necessary for US computers, monitors and printers. Even with the most expensive transformers, one should always monitor the electrical supply. Most printers will need an adapter, but not all adapters are recommended for printers.