DIMM Sockets - THT - vertical, 168-pin for D-RAM, SD-RAM and UD-RAM modules 3,3V and 5,0V. DM Series 168 pins vertical are only available as long latch type (Module locking extractors). Insertion & extraction of the module can be made without any tools. Positive polarization prevents wrong insertion of the module. Contacts are designed with an anti-overstress feature for long contact life. Selective Gold/Tin plated. Gold only in contact area.