How can I tell TurboCapture Microplate Holder Type A from Type B?

The TurboCapture Microplate Holder Type A is non-detachable, while the Microplate Holder Type B has a detachable base.

Both holders are used to support TurboCapture plates of the TurboCapture 96 mRNA and TurboCapture 384 mRNA Kits for liquid handling on robotic workstations.