A memory module includes several memory devices coupled to a memory hub. The flexible tail, which is repositionable when sufficient force is applied, yet allows the invention to be reasonably fixed once configured, allows a user to attach the item holding device in locations unsuitable for traditional fastening mechanisms. Following the preestablishment of the communication session, transmission control messages are exchanged between the transfer server and the transfer client via the preestablished communication session. The lamp unit has longitudinal and transversal fiduciary surfaces and the support has guide rails for guiding the lamp unit as it is inserted transversely with the longitudinal fiduciary surfaces sliding along a reference surface until transversal fiduciary surfaces engage one or more stops. The set forth formulation dissolves 25%-60% of the total drug in the first hour, 50%-90% of the total drug in the first four hours and not less than 80% of the total drug in the first 12 hours using USP dissolution method II at 50 rpm. Or, epoxy is filled into an outer housing, and the metal plate is placed into the outer housing for forming a light emitting diode.