Tag-Connectors come in two types, “With Legs” (also known as “legged”) and “No Legs”. In part numbers a –NL suffix specifies the “No Legs” version.
The Legged solution is ideal for development environments where a secure connection over an extended period of time is required. This option is self-securing to the PCB.
The No Legged option is perfect for production programming where you are performing a one-off short duration operation and where minimizing physical board space is a significant consideration. For longer operations, such as debugging, a clip or fixture can be used to secure the connection instead of holding it by hand.