I just got a pack of them from Amazon. It's made in Singapore, but the label slightly differs from the Amazon photo. It doesn't say "AZO up to 6x" in blue lettering. It does say AZO in yellow lettering above the part that reads 2.4x DVD+R DL in yellow lettering.
I inserted the first one into my external LG and IMGBurn says the disc ID is MKM-001-00 and the supported write speed is only 2.4x.
I attempted to burn at 4x and got this:
W 16:27:07 Write Speed Miscompare! - Wanted: 5,540 KB/s (4x), Got: 3,324 KB/s (2.4x)
W 16:27:07 The drive only supports writing these discs at 2.4x.
And I also saw this warning:
W 16:27:07 L0 Data Zone Capacity Miscompare!
W 16:27:07 Wanted: 2082096, Got: 2086912
What happened here? Is it my drive that only burns at 2.4x with these discs or is it the disc itself?
Otherwise, the burn completed successfully.