ASRock B250M-HDV User Manual - Page 26
Platform Module TPM system, Serial Port Header
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B250M-HDV ATX Power Connector (24-pin ATXPWR1) (see p.6, No. 4) ATX 12V Power Connector (4-pin ATX12V1) (see p.6, No. 1) Serial Port Header (9-pin COM1) (see p.6, No. 20) 12 24 1 13 This motherboard provides a 24-pin ATX power connector. To use a 20-pin ATX power supply, please plug it along Pin 1 and Pin 13. This motherboard provides an 4-pin ATX 12V power connector. RRXD1 DDTR#1 DDSR#1 CCTS#1 1 RRI#1 RRTS#1 GND TTXD1 DDCD#1 This COM1 header supports a serial port module. Chassis Intrusion Header (2-pin CI1) (see p.6, No. 16) TPM Header (17-pin TPMS1) (see p.6, No. 17) GND SERIRQ # S_PWRDWN # GN D LAD1 LAD2 SMB_DATA_MAIN SMB_CLK_MAIN GN D +3VS B LAD0 +3V LAD3 PCIRST # FRAM E PCICLK 1 GND Signal This motherboard supports CASE OPEN detection feature that detects if the chassis cove has been removed. This feature requires a chassis with chassis intrusion detection design. This connector supports Trusted Platform Module (TPM) system, 1 which can securely store keys, digital certificates, passwords, and data. A TPM system also helps enhance network security, protects digital identities, and ensures platform integrity. GN D English 21
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