As long as the PC conform to their particular standard (I believe)EN 60950 you could then apply the EN 62353 as it states..For equipment not built to IEC 60601-1 these requirements may be used taking into account the safety standards for the design and information in the instructions for use of that equipment, especially as you have an equipment leakage limit of 500uA for class I equipment's,
applying as always a large dose of good sense.
