No safe generic
Plug size and polarity are both unknown, and this is an expensive thing to damage.
Conference rooms / Logitech
Power Supply for Logitech Rally Bar: 19V 90W Adapter
Logitech 90W external power adapter
Verified November 2026
Which one do you have?
You need: 993-002982 is a separate adapter listing, not the 993-001943
You need: 993-001943
- Device end
- DC plug; size not confirmed
- Wall end
- Worldwide adapter; regional mains cord not confirmed
- Voltage
- 19V DC
- Current
- about 4.7A (90W at 19V, calculated, not printed in a source)
Polarity not confirmed. Read the label on your item.
The usual mistake
Buying the 48V 96W Rally Table Hub adapter (993-001942): the two aren't interchangeable.