UEBO M100 Portable 1080p - Manual (Page 9)

2 Make sure to properly orient the memory card before insertion. And remember that the
memory card can only be inserted from one direction, please don’t try to force it in as
that may damage the memory card or the memory card reader in the Player.
1.10 Front Panel
1. POWER button 2. Copy button
3 Memory Card slot. 4. Power Indicator
5. USB HOST port