General

How do I identify CD21/CD31 MKI and MKII models?

Serial number beginning with:

CD21 (MKI) / DSL drive       91

CD31 (MKI)/ DSL drive        95

CD21 MKII / Shinwa drive   11, 14, 17, 918, 919

CD31 MKII / Shinwa drive   12, 15, 18, 958