CMC Magnetics BD-R

My UJ273 is also made in Philippines, so it should be also a QSI.

It’s usually easiest to check the UL-file number to identify the manufacturer. UJ-273 was made by Panasonic itself:


E140407 can be searched in UL database :slight_smile:
I’m not a total freak, but I haven’t heard of any blu-ray drives made by QSI (neither slim nor 5,25").

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OK, thought Panasonic have stopped making optical drives long time ago.

And I have good experience with the reliability of Panasonic-products, but the drives in Panasonic DVD-Recorder (Standalone) were not very reliable.

My Pioneer or Sony DVD-recorders had much better drives IMHO

Intenso 25GB 4x / CMCMAGBA3

Burned with Panasonic UJ-220 @2x

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MediaRange 25GB 6x / CMCMAGBA5

Burned with LiteOn iHBS112 @4x

Writer: Pioneer BDR-212E
Firmware: 1.01
Media: Mediarange BD-R 25GB 6x
Burn Speed: 6x
Software: Nero 12
Burned 2021
Scanned 2021

I´m far away

Well, from my experience write speed above 4x are not recommended for CMC on 209, 211 & 212 series drives, although I think that scan would look a bit better at 4x test speed, 8x on LiteOns seems to give more errors.

Mostly I burn 4x on BA5, maybe next time again