Lenovo USB Portable DVD Burner Quick Start Manual page 8

v Do not charge the battery or operate your computer, ac power
adapter, or accessories near flammable materials or in explosive
environments.
v Ventilation slots, fans, and heat sinks are provided with the product
for safety, comfort, and reliable operation. These features might
inadvertently become blocked by placing the product on a bed, sofa,
carpet, or other flexible surface. Never block, cover, or disable these
features.
viii
Lenovo USB Portable DVD Burner Quick Start Guide