ASRock P55M Pro User Manual - Page 27

USB 2.0 Headers (9-pin USB12_13) (see p.11 No. 16) USB_PWR P-13 P+13 GND DUMMY 1 GND P+12 P-12 USB_PWR (9-pin USB10_11) (see p.11 No. 18) (9-pin USB8_9) (see p.11 No. 19) USB_PWR P-11 P+11 GND DUMMY 1 GND P+10 P-10 USB_PWR USB_PWR P-9 P+9 GND DUMMY 1 GND P+8 P-8 USB_PWR Print Port Header (25-pin LPT1) (see p.11 No. 26) AFD# ERROR# PINIT# SLIN# GND 1 SPD7 SPD6 ACK# SPD5 BUSY SPD4 PE SPD3 SLCT SPD2 SPD1 SPD0 STB# Besides six default USB 2.0 ports on the I/O panel, there are three USB 2.0 headers on this motherboard. Each USB 2.0 header can support two USB 2.0 ports. This is an interface for print port cable that allows convenient connection of printer devices. TPM Header (19-pin TPM1) (see p.11 No. 25) 1 PCICLK FRAME PCIRST# LAD3 +3V LAD0 NC +3VSB GND PWRDWN GND NC LAD2 LAD1 GND NC SERIRQ CLKRUN NC This connector supports a Trusted Platform Module (TPM) system, 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. Infrared Module Header (5-pin IR1) (see p.11 No. 24) IRTX +5VSB DUMMY 1 GND IRRX This header supports an optional wireless transmitting and receiving infrared module. 27