Warranty: Our products offer a full refund or exchange guarantee within 30 days, and an additional 12 months warranty, 7d*24h Email support. Compatible with :HP ZBook Create G7 Notebook PC, HP ZBook Studio G7 Mobile workstation. New type 135w charger Compatible with HP L15534-001 TPN-DA11 TPN-DA11 TPN-CA13, Pavilion Gaming 15 17 series, OMEN by HP 15-dc series, Spectre 15-df x360 Series. Safety: This product has multiple protections including protection against short-circuiting, overvoltage, overcurrent, and internal overheating. Designed with high temperature resistant and flame retardant materials, all our products provide the ultimate protection for your devices. Input Volt Range: 110-240V 50-60Hz, Output Max: 19.5V 6.9A 135W, Blue tip size: 4.5*3.0mm. (This 135w charger do not replace the hp 150w 200w blue tip charger. ).