HP 9100-5507 - Wall mount type power supply module (transformer, Leader Electronics) - 127VAC input, 57-63Hz - 8VAC output at 1.0A max (USA, Canada, Mexico, Taiwan, Brazil, Colombia) - Wall Mount Type Power Module (8V AC at 1Amp Max Output) - for 120

Wall mount type power supply module (transformer, Leader Electronics) - 127VAC input, 57-63Hz - 8VAC output at 1.0A max (USA, Canada, Mexico, Taiwan, Brazil, Colombia) - Wall Mount Type Power Module (8V AC at 1Amp Max Output) - for 120V Operation in the USA/Canada/Mexico/Taiwan/Brazil/ Colombia