DDR4 U-DIMM high-speed, memory module that use 8pcs of 512M x 8、1024M x 8、 256MX16、512MX16、1GX8、2GX8、2GX16 bits DDR4 SDRAM in FBGA package and a 4K bits serial EEPROM on a 288-pin printed circuit board. KingSpec DDR4 is a Dual In-Line Memory Module and is intended for mounting into 288-pin edge connector sockets. Synchronous design allows precise cycle control with the use of system clock. Data I/O transactions are possible on both edges of DQS. Range of operation frequencies, programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.