DTM68101D is a registered 1Gx72 memory module, which conforms to JEDEC's DDR4-2133, PC4-2133 standard. The assembly is Single-Rank containing eighteen: Samsung 1Gbx4 DDR4-2133 SDRAMs. One 2K-bit EEPROM is used for Serial Presence Detect and a combination register/PLL, with Address and Command Parity, is also used. Both output driver strength and input termination impedance are programmable to maintain signal integrity on the I/O signals in a Fly-by topology. A thermal sensor accurately monitors the DIMM module and can prevent exceeding the maximum operating temperature of 95C.