[QUOTE=al55;2127670]I buy a SH-S202J
I cannot burn CD-R less of 16x
here the printscreen:
i want to burn CD-R at 8x and 4x[/QUOTE]
You might be out of luck, in this case. The very recent Samsung-branded DVD burners are incapable of burning modern high-speed CD-Rs any slower than 16x without resulting in excessive C1 and/or C2 errors. And newer CD-R media, as a rule, burn poorly at 4x (with increased error count and very high jitter) and marginal at 8x. In other words, the only way that you could burn CD-Rs at 8x or 4x would be if your CD-R media has a media code (MID) whose maximum supported burn speed is slower than 16x.