1========= 2MSI JSPI1 3========= 4 5JSPI1 is a 5x2 or 6x2 2.0mm pitch pin header on many MSI motherboards. 6It is used to recover from bad boot ROM images. Specifically, 7it appears to be used to connect an alternate ROM with a working image. 8Pull the #HOLD line low to deselect the onboard SPI ROM, allowing another 9SPI ROM to take its place on the bus. Pull the #WP line high to disable write-protection. 10Some boards use 1.8V flash chips, while others use 3.3V flash chips; 11Check the flash chip datasheet to determine the correct value. 12 13**JSPI1 (5x2)** 14 15======== ======== ======== ==== 16name pin pin name 17======== ======== ======== ==== 18VCC 1 2 VCC 19MISO 3 4 MOSI 20#SS 5 6 SCLK 21GND 7 8 GND 22#HOLD 9 10 NC 23======== ======== ======== ==== 24 25**JSPI1 (6x2)** 26 27======== ======== ======== ============ 28name pin pin name 29======== ======== ======== ============ 30VCC 1 2 VCC 31SO 3 4 SI 32#SS 5 6 CLK 33GND 7 8 GND 34NC 9 10 NC (no pin) 35#WP 11 12 #HOLD 36======== ======== ======== ============ 37 38======== ===================================== 39name function 40======== ===================================== 41VCC Voltage (See flash chip datasheet) 42MISO SPI Master In/Slave Out 43MOSI SPI Master Out/Slave In 44#SS SPI Slave (Chip) Select (active low) 45SCLK SPI Clock 46GND ground/common 47#HOLD SPI hold (active low) 48#WP SPI write-protect (active low) 49NC Not Connected (or no pin) 50======== ===================================== 51