Taito USB Light Up Warning Labels

At first glance, these USB light up warming labels seem....silly. Why obstruct your USB port with a silly light up sign? Then we had a closer look at the available warnings:
On Air (written in english)
Fasten your seat belt (logo)
SOS
Operation in progress (written in japanese, red colour)
Do not use fire (written in japanese & english)
Empty bus (written in japanese, white colour and blue words)
It's Warm (written in japanese)
Safety first (written in japanese, yellow colour)
No smoking (written in japanese and english, white colour)
Exit (written in japanese and english, green colour)
Yep, still silly. Although the "On Air" one might not be so bad.