In High Capacity Cards, the 32-bit argument of memory access commands uses the memory address in block address format. Block length is fixed to 512 bytes, In Standard Capacity Cards, the 32-bit argument of memory access commands uses the memory address in byte address format. Block length is determined by CMD16, i.e.: (a) Argument 0001h is byte address 0001h in the Standard Capacity Card and 0001h block in High Capacity Card (b) Argument 0200h is byte address 0200h in the Standard Capacity Card and 0200h block in High Capacity Card