The inclusion of an I/O module at node nine is mandatory and the slot for the module was physically incompatible with other modules to ensure this.

Because of this, the USB cable included with the Nook Color is physically incompatible with other devices employing standard micro-USB connectors.

T5 lamps are both electrically and physically incompatible with T8 and T12 lamps.

In the UK, an adapter must be present at the remote end as the 6-pin BT socket is physically incompatible with 8P8C.

PCI slots were the first physically incompatible expansion ports to directly squeeze ISA off the motherboard.

Get the child to practise positive behaviours which are physically incompatible with the inappropriate behaviour.

They are similar to modular connectors (as used in RJ11), but feature a side-mounted hook, rather than a bottom-mounted one, and are physically incompatible.

The solution is physically incompatible with other drugs including amphotericin B.

Trissel and colleagues have shown that 5-FU and leucovorin are physically incompatible when mixed in portable-pump reservoirs.

By 1979 there were three competing technical standards, with different, physically incompatible tape cassettes.