For Standard/Enhanced/True-USB Willem programmer.
The adapter has built-in onboard a PLCC44 adapter, it's handy for the PLCC44 chips. Device support
Atmel: AT89C51, 52, 55, AT89LV51, 52, 55, AT89S8252 (8K+2K), AT89S8253 (12K+2K), AT89S51, AT89S52, AT89S53, AT89LS8252, AT89LS53, AT89C1051, AT89C2051, AT89C4051 (20pin), AT89C51RC (32KB), AT89C55WD ( 6.2V )SST89C54/58, SI89C52Intel: i87C51, i87C51FA, i87C51FBi8xC51, i8xC52, i8xC54, i8xC58AVR
AT90 series: AT90S1200, AT90S2313 All 51 series MCU, example: P87C51X2, P87C52X2, P87C54X2, P87C58X2, P87C51RA+4A, P87C51RB+4A etc.