How to distinguish DDR3 slot and DDR3L slot?

In fact ,DDR3 slot and DDR3L slot are different,according to my working experience,i summary some main features, for your reference.

At first,their appearances are different,this is the following pictures:

(1) DDR3 SLOT                                    (2)DDR3L SLOT

Secondly,their pin amounts are different, DDR3 slot pins are 240 pin,but DDR3L slot pins are 204 pin,this is different obviously

Thirdly,their working voltage is different,this is physical features,we can’t see them,they perform in the working circuit,DDR3 slot need 1.5v voltage,then DDR3 need 1.35v voltage

At last,their usages are different,DDR3 slot has used consumer motherboard,then DDR3L slot has

Used all in one motherboard and laptop motherboard,Please don't get confused in the future